1) Emikd is interested in purchasing the mobile home that Yanshiro presently owns. Yanshiro has told Emiko that he plans to remove the tires from the mobile home, place it on and attach it to a cement foundation, and have it connected to a local sewer line. Emiko tells him that his plan is acceptable to her. When the work is done she will pay him. Yanshiro agrees. Yanshiro does follow through with his plan. When Emiko comes to pay for the now stationary home Yanshiro refuses to accept the money. He argues their oral agreement was not valid. Is he correct? Explain..