John is a client of the marketing firm Sally works for. Which of the following is false?
a) The consideration for the agreement between John and Sally was the exchange of his promise for her act; therefore, the contract did not become binding until she quit her job and moved to Miami.
b) John is not legally bound by the agreement because Sally did not receive any benefit from the contract.
c) Sally is obligated to fulfill her part of the agreement as long as John has fulfilled his.
d) The contract between John and Sally requires both parties to act in good faith.