Lee wants to sell his guitar, so he places an advertisement in the local newspaper for $5,500. Mr Lee's son, Prince, responds to the advertisement by calling him and indicating that he will buy the guitar for $5,300. Mr Lee refuses, but informs Prince he will accept $5,400. Prince will only pay $5,400 if Mr Lee includes a guitar stand. Mr Lee agrees to these terms. Mr Lee's daughter, Princess, contacts him and offers $5,450 for the guitar. Is he able to accept this offer and sell the guitar to Princess? Advise Mr Lee as to his contractual rights