Matt has an expensive stereo in his car which he enjoys playing at full volume. Matt's mother is worried that Matt is going to damage his hearing from listening to loud music so she offers to pay him $300 if he refrains from listening to loud music for the next three months. Matt accepts her offer and after three months without listening to any music he tries to collect the money from his mother. She refuses to pay and he sues for breach of contract. Which of the following is true?

Group of answer choices

A. Mother can effectively assert the defense of undue influence.

B. A contract was not created because Matt did not give any consideration.

C. If Matt is a minor, Mother will not have to perform her obligations.

D. The parties have formed a valid unilateral contract.