Mark and Steve signed a contract that contains a merger clause such that the contract is integrated and intended as their full and final agreement. The parol evidence rule will prevent the admission of evidence offered to: Select one: a. Establish that fraud had been committed in the formation of the contract. b. Explain the meaning of an ambiguity in the contract. c. Prove the existence of a subsequent oral agreement modifying the contract. d. Prove the existence of a prior oral agreement modifying the contract.