Dina is debating whether to attend college.Chris promises her $40,000 if she will attend college and graduate.Dina tells Chris that she agrees to this. She enrolls in a local college, attends full-time for four years, and graduates with honors.When Dina asks Chris for $40,000, Chris says, "I don't remember promising you $40,000.But if I did say that, it's not enforceable, because we didn't bargain over it.And even if you say you went to college because of this "offer" I supposedly made, I revoke it now."Can Dina enforce their agreement? Explain (HINT - you must mention all elements of a valid and enforceable contract).