PT 51 S1 Q3

In some places, iceberg lilies are the mainstay of grizzly bears' summer ... ...

Which one of the following, if true, most helps to resolve the apparent discrepancy in the statements above?
(A) When grizzly bears forage for iceberg lilies, they generally kill many more lilies than they eat.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Resolve/Explain" Questions, Set 1