求助！！GWD-9-Q8 谢谢大家！

77banana

GWD-9-Q8:
Many large department stores in Montalia now provide shopping carts for their customers. Since customers using shopping carts tend to buy more than those without shopping carts, most of these stores are experiencing strong sales growth, while most other department stores are not. Therefore, in order to boost sales, managers of Jerrod’s, Montalia’s premier department store, are planning to purchase shopping carts and make them available to the store’s customers next month.
Which of the following, if true, casts most doubt whether the managers’ plan, if implemented, will achieve its goal?
A.    Since most customers associate shopping carts with low-quality discount stores, Jerrod’s high-quality image would likely suffer if shopping carts were introduced.
B.    Because the unemployment rate has declined to very low levels, Jerrod’s now has to pay significantly higher wages in order to retain its staff.
C.    A number of department stores that did not make shopping carts available to their customers have had to close recently due to falling profits.
D.    Shopping carts are not very expensive, but they generally need to be replaced every few years.
E.    Stores that make shopping carts available to their customers usually have to hire people to retrieve the carts from parking areas.
答案A

gaor

A说明目标客户不一样，实施plan可能反而降低销售额
B跟提高sales无关
c可以证明manager's plan可能有用，所以不选
D和E可能与net profit有关但其实都和提高sales无关，所以不选