On November 23, Sally agreed to sell to Bart her car for $7,000, delivery and payment to be made on December 1. On November 26, Bart informed Sally that he wished to cancel the contract and would pay Sally $350 if Sally agreed. Sally agreed and took the $350 in cash. On December 1, Bart presented Sally with $6,650 and demanded that Sally deliver the automobile. Sally refused, and Bart sued. What is the likely outcome of the lawsuit