On May 1, Jennings, a car dealer, wrote a letter to Wheeler and stated, “I have a 1955 Thunderbird convertible in mint condition that I will sell you for $13,500 at any time before June 9. [Signed] Peter Jennings.” By May 15, having heard nothing from Wheeler, Jennings sold the car to another. On May 29, Wheeler accepted Jennings’s offer and tendered $13,500. When told Jennings had sold the car to another, Wheeler claimed Jennings had breached their contract. Is Jennings in breach? Explain.