Larry wrote to Joyce, offering to buy her car for $3,000, and asked for a reply by mail. Joyce received Larry's offer on January 3. At 10 a.m. on January 4, Joyce mailed a letter to Larry in which she accepted his offer. Larry did not receive the letter until January 11. On January 5, he saw another car he liked better and telephoned Joyce to revoke his offer. Can he do so? Why or why not? Would the answer be different if Joyce's letter was lost in the mail and never received by Larry? Why or why not?