34. Jill says to Ben, "I offer to sell you my DVD player for $90." Ben replies, "If you do not hear otherwise from me by Thursday, I have accepted your offer." Jill agrees and does not hear from Ben by Thursday. Does a contract exist between Jill and Ben? a. Yes, because the parties agreed that silence would constitute an acceptance. b. No, because silence can never constitute an acceptance. c. No, because there was no consideration because neither party had performed yet. d. No, because neither parties are merchants