Elmo Advertises a Reward for the Return of His Lost

Multiple Choice

Elmo advertises a reward for the return of his lost dog.Floyd,who does not know of the reward,finds and returns the dog.Floyd cannot recover the re?ward because he

A) did not confer a benefit on Elmo by returning the dog.
B) did not know of the reward when he found and returned the dog.
C) does not need the money.
D) returned the dog.