Crosby Believes That He and Dakota Agreed He Would Act

Crosby believes that he and Dakota agreed he would act as her personal sports trainer for seven workout sessions.In a later dispute,the existence of any contract can be judged by

A) the parties' statements at the time of their alleged contract.
B) what the defendant claims was the parties' intent.
C) what the plaintiff claims was the parties' intent.
D) what the parties agree they intended.