Manuel contracts to sell a painting that was painted by his deceased grandmother, then has a change of heart and decides to hang it in his own bedroom. He notifies Nadine, the person who had planned to buy it. Can Nadine have the contract enforced?

A. Yes, it can be enforced under the theory of quasi-contract because Nadine had relied on Manuel's promise.
B. No, it can't be enforced because Manuel canceled the contract before it was executed.
C. Yes, it can be enforced under the equitable remedy of specific performance.
D. No, it can't be enforced because this is of a personal nature, and Manuel retains the rights to the painting.