On May 2, Mason orally contracted with Acme Appliances to buy for $480 a washer and dryer for household use. Mason and the Acme salesperson agreed that delivery would be made on July 2. On May 5, Mason telephones Acme and requested that the delivery date be moved to June 2. The Acme salesperson agreed with the request. On June 2, Acme failed to deliver the washer and dryer to Mason because of an inventory shortage. Acme advised Mason that it would deliver the appliances on July 2 as originally agreed. Mason believes that Acme breached its agrement with Mason. Acme contends that its agreement to deliver on June 2 was not binding. Acme's contention is Correct, because Mason is not a merchant and was buying the appliances for household use Correct, because the agreement to change the delivery date was not in writing Incorrect, because the agreement to change the delivery date was binding Incorrect, because Acme's agreement to change the delivery date is a firm offer that cannot be withdrawn by Acme