Walton Associates obtained an approved contract in writing. The contract specified that Walton would deliver consulting services, and services would begin in one month. Payment would also begin in one month. The contract describes the services Walton will perform, and also specifies payment terms. Either the customer or Walton can cancel the contract prior to the start service, without penalty. For purposes of revenue recognition, does Walton have a contract on the day the contract is received? O a. No, because Walton and the customer can cancel without penalty, and neither has performed an obligation under the contract O b. There is not enough information to answer the question O c. Yes, because Walton has a written approved contract O d. Maybe, depending on whether Walton can estimate collectability of the receivable