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题库 / Prep2012-CR-48
FastMart, a convenience store chain, is planning to add pancake syrup to the items it sells. FastMart stores do not have shelf space to stock more than one variety of syrup. Surveys of FastMart customers indicate that one-fourth of them prefer low-calorie syrup, while three-fourths prefer regular syrup. Since FastMart's highest priority is to maximize sales, the obvious strategy for it is to stock regular syrup.
Which of the following, if true, most seriously weakens the argument?
People buying pancake syrup at convenience stores, those buying it at supermarkets, generally buy it only a few times.
People who prefer low-calorie syrup generally use about the same amount of syrup on their pancakes as those who prefer regular syrup.
Regular syrup does not sell for a higher price per unit than low-calorie syrup.
In general, customers who prefer regular syrup buy low-calorie syrup if regular is unavailable, but those who prefer low-calorie will not buy regular syrup.
Sales of syrup are not expected to account for a large proportion of total dollar sales at the average FastMart store.
（超市卖糖浆，但是摆放糖浆的架子不够用）
P: 架子要么摆低卡糖浆，要么摆正常糖浆，顾客中，喜欢低卡糖浆的占1/4，喜欢正常糖浆的占3/4
C: 摆正常糖浆可以maximize sales（不知道这里的sales指的是销售量还是销售额）
问削弱？
B 错选,喜欢低卡糖浆的人和喜欢正常糖浆的人在pancakes上用的糖浆同样多，和他们买不买糖浆，sales会不会最大化无关。
C 正常糖浆的价格不比低卡糖浆低。价格不低，需求还大，sales可能是最大化了，加强。
D 如果摆正常糖浆，就损失了喜欢低卡的顾客，而摆低卡糖浆，所有的顾客都会买低卡糖浆，此时sales才是最大化的。
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