On June 10,A Delivered to B a Written Offer to Sell

On June 10,A delivered to B a written offer to sell his (A's) property to B for $6000.00.The offer stated that it would be open for acceptance until 9A.m.on June 12.On June 11,B heard that A was agreeing to sell or had sold his property to C.On the evening of June 11,B delivered an acceptance of A's offer to the place where A was staying and on the following morning personally delivered his acceptance to A,who declined the acceptance stating,"You are too late." In this situation

A) A's offer must remain open until 9 A.m.on June 12th.
B) B's acceptance of A's offer is a valid acceptance.
C) because B did not give A the money,there is no acceptance.

D) B's failure to accept A's offer immediately constitutes a rejection of A's offer.
E) having heard that A had sold or was selling the property to C, B knows A's offer has been revoked.