Buyer and Seller went out to dinner when Seller said "I will sell you this watch for $50." Buyer never responded and the two went their separate ways after dinner was finished. Three days after their dinner, Buyer called Seller and said: "I accept your offer; I will buy your watch for $50." This was the first communication between the two since the dinner. In a jurisdiction using common law presumptions regarding offer and acceptance rules, Buyer and Seller are:
(A) Not in a contract, because Buyer did not accept at dinner.
(B) Not in a contract, because the terms of the offer were too indefinite.
(C) In a contract, because Buyer accepted Seller's offer to sell the watch for $50.
(D) In a contract, unless Buyer changes his mind in which case he can void the contract since it was oral.