Once a great boxer  , Tom Brown, went to a restaurant for dinner. He put his bag near the door, but he was afraid that someone would take it. So he got out a pen and a piece of paper and wrote on it: "The great boxer, Tom Brown, left his bag here. He'll come back in a few minutes. " He put the paper on his bag and went to have his dinner. When he came back, his bag wasn't there. But he found a piece of paper on the ground. It said: "A great runner took away your bag, and he will not come back. " Mr Brown was afraid   _  .
to put down his bag near the door he couldn't find his pen thieves would take his bag away he couldn't get enough food himself from the restaurant
Question: Once a great boxer  , Tom Brown, went to a restaurant for dinner. He put his bag near the door, but he was afraid that someone would take it. So he got out a pen and a piece of paper and wrote on it: "The great boxer, Tom Brown, left his bag here. He'll come back in a few minutes. " He put the paper on his bag and went to have his dinner. When he came back, his bag wasn't there. But he found a piece of paper on the ground. It said: "A great runner took away your bag, and he will not come back. " Mr Brown was afraid   _  .
A. to put down his bag near the door
B. he couldn't find his pen
C. thieves would take his bag away
D. he couldn't get enough food himself from the restaurant
Answer: