Which of the Following Is Not True of Reverse Auctions

Which of the following is not true of reverse auctions?

A) Retail buyers provide a group of potential vendors with a specification for what they want.
B) There is one buyer,the retailer,and many potential sellers,the manufacturing firms.
C) Retailers use it to get quality private-label merchandise at low prices.
D) Reverse auctions are common among commodities and seasonal products.
E) The retailer chooses the lowest bidder regardless of other factors.