Although most builders do not consider the experimental building material ... ...

Although most builders do not consider the experimental building material papercrete to be a promising material for large-scale construction, those who regularly work with it, primarily on small-scale projects, think otherwise. Since those who regularly use papercrete are familiar with the properties of the material, it is likely that papercrete is indeed promising for large-scale construction. The argument is most vulnerable to criticism on the grounds that it
(A) confuses what is promising for small-scale construction with what is promising for large-scale construction
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2012 LSAT (PT67): Logical Reasoning A