Sullivan signs an employment agreement with Keller ConstructionBig Sky ConstructionKellerKeller

Sullivan signs an employment agreement with Keller ConstructionBig Sky ConstructionKellerKeller

. Two days after signing, Sullivan receives a job offer from for considerably more money. He explains the situation and asks to be released from the contract.  agrees orally, provided Sulivan will help them find a replacement. Is this release valid?

(A) No, because the release agreement is not supported by consideration.(B) No, because a release agreement must be in writing to be valid.(C) Yes, the release agreement meets the requirements for a valid release.(D) We cannot say without knowing whether Sullivan has yet done any work for Keller.