Wanda Tells Vito That She Plans to Buy His Chocolate

Wanda tells Vito that she plans to buy his Chocolate Goodies store some day.Vito says, "I won't sell," but later changes his mind and sends to Wanda a letter of "acceptance." Wanda and Vito have

A) a contract.
B) no contract, because Wanda merely expressed her intention to enter a future contract.
C) no contract, because Vito simply expressed his opinion that "I won't sell."
D) no contract, because Vito's letter was only an invitation to negotiate.