On March 1, Joe Contractually Agreed to Purchase an Antique

On March 1, Joe contractually agreed to purchase an antique family heirloom from his third cousin, Maureen, for $40 000. Joe paid half of that price immediately and promised to pay the other half upon delivery. Maureen promised to deliver the heirloom on May 1. On April 1, another member of the family discovered that the heirloom had not belonged to a famous ancestor, as everyone had believed, but rather to that person's half- brother. The market value of the heirloom consequently dropped to $10 000. Maureen nevertheless refuses to deliver it as promised. Joe is entitled to

A) restitution of $20 000.
B) expectation damages of $30 000.
C) reliance damages of $20 000.
D) expectation damages of $40 000.
E) expectation damages of $10 000.