Owner calls professional plumber to his home and describes the work he wants done. Plumber says, "I estimate the work will take four hours and I charge $60/ hour. So my estimate is $240." Owner says, "That sounds reasonable. Go ahead." Assuming no further communications between the parties, which is the most accurate statement?
(A) The parties are in an enforceable bilateral contract for the plumbing work to be done for $240.
(B) The parties are in an enforceable bilateral contract, but the price charged by the plumber could be more or less than $240, depending on how long the job actually takes, assuming she was acting in good faith both in making the estimate and in doing the work.
(C) The parties are not in an enforceable contract.
(D) The parties are in an enforceable unilateral option contract whereby the plumber is bound, but Owner may revoke any time before Plumber actually starts work.