Which of the following is INCORRECT

A) Whether an auction is held with or without reserve, once a bid is accepted by the auctioneer, there is a bilateral contract for the sale of the goods between the bidder and the seller.

B) Whether an auction is held with or without reserve, the highest bidder is allowed to withdraw their bid before the auctioneer accepts the bid on behalf of the seller.

C) Where an auction without reserve is held, the auctioneer has the obligation to accept the highest bid. Therefore, if the vendor's own bid is the highest, the auctioneer can accept the vendor's bid and reject other bids, provided that the auctioneer at the time declares the bid is a vendor bid.

D) In an auction without reserve, the auctioneer has a unilateral contract with the highest bidder under which the auctioneer must accept the highest bid.