PT 65 S1 Q13

Researchers have studied the cost-effectiveness of growing halophytes—salt-tolerant ... ...

Which one of the following, if true, most strengthens the argument above?
(A) A given volume of halophytes is significantly different in nutritional value for animal forage from the same volume of conventional forage crops.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Dec 2011 LSAT (PT 65): Logical Reasoning A