PT 62 S2 Q21

Most large nurseries sell raspberry plants primarily tocommercial raspberry ... ...

Which one of the following is most strongly supported by the information above?
(A) If Johnson is a commercial raspberry grower and Wally's Plants is not a large nursery, then the shipment of raspberry plants that Johnson received was probably guaranteed to be disease-free.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-A, Dec. '10 LSAT (PT 62 Sec. 2)