In a written contract, Singer agreed to deliver to Byer 500 described chairs at $20 each F.O.B. Singer's place of business. The contract provided that "neither party will assign this contract without the written consent of the other." Singer placed the chairs on board a carrier on January 30. On February 1 Singer said in a signed writing, "I hereby assign to Wheeler all my rights under the Singer-Byer contract." Singer did not request and did not get Byer's consent to this transaction. On February 2 the chairs were destroyed while in transit in a derailment of the carrier's railroad car. ". In an action by Wheeler against Byer, Wheeler probably will recover
$10,000, the contract price.  the difference between the contract price and the market value of the chairs. nothing, because the chairs had not been delivered.  nothing, because the Singer-Byer contract forbade an assignment
Question: In a written contract, Singer agreed to deliver to Byer 500 described chairs at $20 each F.O.B. Singer's place of business. The contract provided that "neither party will assign this contract without the written consent of the other." Singer placed the chairs on board a carrier on January 30. On February 1 Singer said in a signed writing, "I hereby assign to Wheeler all my rights under the Singer-Byer contract." Singer did not request and did not get Byer's consent to this transaction. On February 2 the chairs were destroyed while in transit in a derailment of the carrier's railroad car. ". In an action by Wheeler against Byer, Wheeler probably will recover
A. $10,000, the contract price. 
B. the difference between the contract price and the market value of the chairs.
C. nothing, because the chairs had not been delivered. 
D. nothing, because the Singer-Byer contract forbade an assignment
Answer: