PT 65 S4 Q1

When a forest is subject to acid rain, the calcium levelin the soil declines. ... ...

Which one of the following, if true, most helps to explain the greater decline among sugar maples?
(A) Soil in which calcium levels are significantly diminished by acid rain is also likely to be damaged in other ways by acid rain.
(B) ...
(C) ...
(D) ...
(E) ...

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