On April 1st,Wilson Sports manufacturing mailed to Dick's Sporting goods a letter stating that it would sell 1,000 rackets at $100 per racket, and that the offer would remain open until April 30th of the same year.On April 15th, Wilson notifed Dick's that it would withdraw its offer since the price of material had skyrocketed.Dick's chose to ignore the notice and demanded the 1,000 rackets for the $100 price on April 29th, the letter was received by Wilson on May 2nd.Dick's demands delivery of the rackets.What legal concepts are relevant, and what is the likely result?