A Offers in Writing to Sell His Truck to B

A offers in writing to sell his truck to B for $8000.00.The offer goes on to state that acceptance must be hand-delivered in writing to A.However,B decides to send A a fax in which he accepts A's offer.In this case

A) A must sell his truck to B.
B) as far as B is concerned,the only important part of A's offer is B's acceptance in any form.
C) the failure of B to accept the offer by fax causes A's offer to lapse.
D) B's fax is a proper acceptance of A's offer.
E) B's fax is not a proper acceptance of A's offer.