16.Many consumers are concerned about the ecological effects of wasteful packaging. The concern probably explains why stores have been quick to store new cleaning products that have been produced in a concertrated form.The concerntrated form is packaged in smaller containers that use less plastic and require less transportation space.

Which of the following, if true, most seriously undermines the explaination offered above?

A Few consumers believe that containers of concentrated cleaning products are merely small packages of regular cleaning products.

B The containers in which concentrated cleaning products are packaged are no harder to recycle than those in which regular cleaning products are packaged.

C Those concentrated cleaning products that are intended to be used diluted have clear instructions for dilution printed on their labels.

D The smaller containers of concentrated cleaning products enable supermarkets and drugstores to increase their revenues from a given shelf space.

E Consumer pressure has led to the eliminaton of wasteful cardboard packaging that was used for compact discs.

ans:d

不是很理解，店主提高收入和前面的解释有什么关系呢，为什么这里就削弱了呢？