Sam was a landscaper. Both Ashley and Betty owned homes and explained to Sam that they needed their front yards completely landscaped. On June 15, Sam mailed Ashley and Betty offers to landscape their yards. Sam offered to landscape Ashley's for $1,000, and offered to do Betty's yard for $1,500. Both offers stated that Sam's offer would be open until June 30. On the morning of June 20, Ashley mailed Sam a properly stamped and addressed letter stating, "I accept your offer." That afternoon, Ashley spoke with Zack, who said he'd do the job for $700. Ashley immediately mailed a letter to Sam by express mail that read, "Please disregard my other letter. I found someone else to landscape my lawn." On June 21, Sam received the letter Ashley sent by express mail. The next day, on June 22, Sam received Ashley's first letter. Sam demanded that Ashley permit her to do the work for $1,000, but Ashley refused. On June 24, Betty mailed a letter to Sam stating, "$1,500 is too much, I would agree to pay you $1,000 if you will agree to do the job." On June 25, Betty spoke to a few other landscapers, who said they would not do the job for less than $2,000. Realizing she could not get a better price, that afternoon Betty sent a letter by express mail to Sam stating, "Disregard my letter of 6/24. I accept your offer." Sam received both of Betty's letters on June 26. On June 27, Betty spoke to Thomas, another landscaper. Thomas said he could to the job for $1,000. Betty immediately called Sam and said (before Sam could say anything), "This is Betty, and the deal is off." Sam then demanded that Betty permit him to do the work for $1,500. Betty refused. If Sam sues Ashley for breach of contract, Sam will:
(A) Lose, because Sam received the letter Ashley sent by express mail before he received Ashley's first letter.
(B) Lose, because the acceptance in Ashley's first letter could be revoked up until the time Sam received it.
(C) Prevail, because the letter Ashley sent by express mail did not have legal effect until Sam received it.
(D) Prevail, because the offer in Ashley's first letter had legal effect when it was sent, even though Sam did not receive it first.