A general contractor was about to bid on a contract to construct a building and asked a plumber to submit a bid on the plumbing work. The plumber submitted an offer in writing to perform the plumbing work for $$75,000.$ The general contractor also obtained other bids for the plumbing work of $$80,000,$ $$90,000,$ and $$95,000.$ The general contractor was awarded the contract on the basis of the bid that he submitted. The general contractor then called the plumber and said, $$I received the contract to build the building and want you to do the plumbing, but you will have to do it for $$70,000$ if you want the job.$$ The plumber said, $$I$$ve gone over my figures, and I made a mistake in adding the cost of my materials. The $$75,000$ bid was low. I can$$t do it for less than $$90,000.$ The general contractor then said, $$I accept your bid for $$75,000.$ The plumber refuses to perform, and the general contractor sues for breach of contract.

If the plumber prevails, it will most likely be because of which of the following?

Group of answer choices

The plumber$$s offer was terminated because it was not accepted within a reasonable time.

The general contractor terminated the plumber$$s offer by insisting that the plumber perform the work for $$70,000.$

His offer to the general contractor was revoked when he informed the general contractor that he could not perform for $$75,000.$

The general contractor should have known of the plumber$$s unilateral mistake.