I am not very sure w/this!!?

It depends on the state. Most states are at will states where an employee could be terminated at any time. Employment contracts, however, are enforceable and therefore a person cannot just be terminated unless the contract allows such termiantion. Once an offer is made and accepted, it cannot be revoked because a contract is formed. Employment contracts, however, must be in writing to be enforceable so the answer would be A because it violates the statute of frauds.