PT 59 S2 Q1

On the Caribbean island of Guadeloupe, a researcherexamined 35 patients ... ...

Which one of the following, if true, most strengthens the researcher's reasoning?
(A) For many of the atypical Parkinson's patients, their symptoms stopped getting worse, and in some cases actually abated, when they stopped eating soursop, custard apple, and pomme cannelle.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-A, Dec. '09 LSAT (PT 59 Sec. 2)