Las Vegas cab driver Gerardo Gamboa thought someone must have left a bag of   chocolates in the back seat of his vehicle,but it turned out to be $300,000 in cold hard cash.     Now,Gamboa is winning honors for honesty after turning in the money he found Monday.The money was returned to an unidentified poker player working in a club.Yellow Checker Star Transportation named Gamboa its driver of the year and rewarded him with $l,000 and a dinner for two at a restaurant.     A message left Wednesday to interview Gamboa at the cab company wasn't immediately   returned.     Gamboa told the Las Vegas Review-Journal he had another passenger by the time he   began wondering what kind of chocolates were in the brown paper bag.He cast a glance inside   the bag at a traffic light.     "I told my passenger,'You are my witness on this,'"the 13-year taxi driver told the Las     Vegas Sun,"and then immediately called my company."     Gamboa took the six bunches of $100 bills to the company's main office,where Las     Vegas police and the club officials returned it to the poker player.     Gamboa saidthemangave him a $5 tip after a trip from the Cosmopolitan Resort to the     Palms Place Tower,and Gamboa then drove to the Bellagio Resort,where a doorman helping a passenger into the car noticed the bag.     It took several hours to check the identity of the owner and return the cash.He took     Gamboa's information,but didn't leave a reward.     "If he doesn't give me anything,that's OK,"Gamboa told the Sun."I'm not waiting for any kind of return.I just wanted to do the right thing,and I appreciate what the company did for me." Who proved the driver found $300.000?
Adoorman. A passenger. The poker player. The police.
Question: Las Vegas cab driver Gerardo Gamboa thought someone must have left a bag of   chocolates in the back seat of his vehicle,but it turned out to be $300,000 in cold hard cash.     Now,Gamboa is winning honors for honesty after turning in the money he found Monday.The money was returned to an unidentified poker player working in a club.Yellow Checker Star Transportation named Gamboa its driver of the year and rewarded him with $l,000 and a dinner for two at a restaurant.     A message left Wednesday to interview Gamboa at the cab company wasn't immediately   returned.     Gamboa told the Las Vegas Review-Journal he had another passenger by the time he   began wondering what kind of chocolates were in the brown paper bag.He cast a glance inside   the bag at a traffic light.     "I told my passenger,'You are my witness on this,'"the 13-year taxi driver told the Las     Vegas Sun,"and then immediately called my company."     Gamboa took the six bunches of $100 bills to the company's main office,where Las     Vegas police and the club officials returned it to the poker player.     Gamboa saidthemangave him a $5 tip after a trip from the Cosmopolitan Resort to the     Palms Place Tower,and Gamboa then drove to the Bellagio Resort,where a doorman helping a passenger into the car noticed the bag.     It took several hours to check the identity of the owner and return the cash.He took     Gamboa's information,but didn't leave a reward.     "If he doesn't give me anything,that's OK,"Gamboa told the Sun."I'm not waiting for any kind of return.I just wanted to do the right thing,and I appreciate what the company did for me." Who proved the driver found $300.000?
A. Adoorman.
B. A passenger.
C. The poker player.
D. The police.
Answer: