Smith and brown, both parties, signed a contract for the sale of Smith's summer cottage. Closing costs were decided and the closing was for June 1. on May 5, Smith announced that the contract was invalid and refused to sell. Smith cannot do this without being subject to legal action because?

a. a contract must have reasonable performance in order to be valid.

b. in refusing to sell, he voided the acceptance, which voids the contract.

c. he had entered into a valid contract, and asserted no basis for declaring it invalid

d. a contract can only be made invalid one month before the agreed upon closing date.