Man lives in Baltimore. LaKeisha lives in Philadelphia. Man mails a letter to LaKeisha on Monday, May 1, offering to sell his car to LaKeisha for $5000. LaKeisha receives Mans letter on Thursday, May 4. On Friday, May 5, LaKeisha accepts Mans offer by dispatching written notice to Man through their mutual friend Gretchen, who is a travelling saleswoman, and who regularly visits both Man and LaKeisha while on her sales rounds. On Saturday, May 6, before Gretchen has delivered Lakeisha acceptance letter to Man, Man has second thoughts and mails a second letter to LaKeisha, withdrawing the offer. On Sunday May 7, Gretchen delivers LaKeishas acceptance letter to Man. What is the status of LaKeishas acceptance as of Sunday, May 7? a. the acceptance is valid b. the acceptance is invalid because the offer was revoked before Mike received LaKeishas acceptance. c. the validity of the acceptance will have to be determined by a federal judge d. the validity of the acceptance will have to be determined by a close reading of the UCC.