A charitable boy picked up trash at the beach one weekend. His neighbor found out what the boy had done and promised to give the boy $100 on his birthday for his charitable work picking up the trash. The boy's birthday arrived, but the neighbor did not pay him. The boy sued the neighbor.

What will be the most likely outcome?

Group of answer choices

A. The boy will recover under a promissory estoppel theory.

B. The boy will recover because the neighbor had a moral obligation to pay him.

C. The boy will recover because the neighbor made a legally enforceable gratuitous promise.

D. The boy will not recover.