On May 1, Melforth Realty Company offered to sell Greenacre to Dallas, Inc., for $1 million. The offer was made by telegraph and stated that the offer would expire on May 15. Dallas decided to purchase the property and sent a registered letter to Melforth on May 10, accepting the offer. Due to unexplained delays in the postal service, Melforth did not receive the letter until May 22. Melforth wishes to sell Greenacre to another buyer, who is offering $1.2 million for the tract of land. Has a contract resulted between Melforth and Dallas?