A(n) _____ is the process in which a buyer posts its interest in buying a certain quantity of items with notations concerning quality, specification, and delivery timing, and sellers compete for the business by submitting successively lower bids until there is only one seller left.

A、 vertical e-marketing
B、 reverse auction
C、 request for bid (RFB)
D、 B2B E-martA reverse auction is the process in which a buyer posts its interest in buying a certain quantity of items with notations concerning quality, specification, and delivery timing, and sellers compete for the business by submitting successively lower bids until there is only one seller left. Reverse auctions create tremendous "power" for the buyer because multiple sellers are competing for the same business.