Laredo Advertises a Reward for the Return of His Lost

Multiple Choice

Laredo advertises a reward for the return of his lost dog. Miguel, who does not know of the reward, finds and returns the dog, without asking for reward. Miguel cannot recover the reward, because he

A) ​did not confer a benefit on Laredo by returning the dog.
B) ​did not know of the reward when he returned the dog.
C) ​did not ask for the reward when he returned the dog.
D) ​returned the dog.