In Lucy V Zehmer (The "Seller" Claimed That the Offer to Sell

In Lucy v. Zehmer (the "seller" claimed that the offer to sell the land was a joke) , the court held that

A) the contract was unenforceable because the seller "was high as a Georgia pine" when he made the offer.
B) the contract was unenforceable because it had not been delivered to the "buyer."
C) the contract was binding and the "buyer" was entitled to specific performance.
D) the "seller" had revoked the offer before the "buyer" accepted it.