Which of the following most logically completes the argument?
Researchers recently asked dozens of shoppers, chosen at random coming out of a FoodBasket supermarket, what they had purchased. The prices of the very same items at the nearest ShopperKing supermarket were totaled and compared with the FoodBasket total. The ShopperKing totals averaged five percent higher than the FoodBasket totals. Nevertheless, this result does not necessarily show that shoppers at ShopperKing would save money overall by shopping at FoodBasket instead, since __________.
A. shoppers who shop regularly at a given supermarket generally choose that store for the low prices offered on the items that they purchase most often
B. for shoppers with more than 20 items, the ShopperKing totals averaged more than five percent higher than the FoodBasket totals
C. many shoppers consider factors other than price in choosing the supermarket at which they shop most regularly
D. there is little variation from month to month in the overall quantity of purchases made at supermarkets by a given shopper
E. none of the people who conducted the research were employees of the FoodBasket supermarket
答案选A,不明白...期待解释....
S比F均价高，但是不见得在S 买东西省钱因为：给出S不省钱原因
B20件无关 C价格外因素无关 Dquanlity无关 E雇员已否无关 所以A看上去虽然不很明白就是他了 这应该是实战思路
如果非要解释的话 老逛某超市的人因为该店的 常买物品价格低 ,所以F肯定有很多东西也比S便宜，顾客只买便宜的，如果s便宜但是顾客不需要，那便宜了也没有用，买其他东西可能和F一样或者比F贵
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