题目选项分析

Manufacturers sometimes discount the price of a product to retailers for a promotion period when the product is advertised to consumers.Such promotions often result in a dramatic increase in amount of product sold by the manufacturers to retailers.Nevertheless.the manufacturers could often make more profit by not holding the promotions.

Which of the following, if true, most strongly supports the claim above about the manufacturers' profit?

【选项】The amount of discount generally offered by manufacturers to retailers is carefully calculated to represent the minimum needed to draw consumers' attention to the product.