Which of the following circumstances most likely indicates that a contract between a seller and a customer is not valid Select one: O A. The customer, but not the seller, may cancel the contract at any time without a reimbursement of costs. B. The contract between the seller and the customer is completed orally, and the parties have no plans to follow up with a written contract. C. While the contract does not include a stated price, there is sufficient information provided to allow for an estimate of the transaction price. D. The customer has the intent and ability to pay substantially all (but not all) of payments that come due