GMAT Critical Reasoning (CR) | Many consumers are concerned about the ecological effects of

Many consumers are concerned about the ecological effects of wasteful packaging. This concern probably explains why stores have been quick to stock new cleaning products that have been produced in a concentrated form. The concentrated 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 explanation offered?

a.Few consumers believe that containers of concentrated cleaning products are