Health club membership has increased dramatically over the

IMO E

argument: overall health care membership has increased in the last five years .
fitness express wants to open more classes in order to capture more membership.
fitness express is assuming increase in membership of health club means this increase will also benefit FITNESS EXPRESS.
we have to wesken this conclusion.

(A)Although it fills all of the classes it opens, Fitness Express's share of all health club memberships has declined over the last five years.(incorrect as it tells classes are filled so indirectly its strngthening the argument.)
(B)Fitness Express' number of classes offered to their clients has declined slightly over the last year.(incorrect because decrease in number of classes doesnt tell anything about capturing of membership)
(C)Advertising has made the name of Fitness Express widely known, but few customers know that Fitness Express health clubs also off acupuncture and shiatsu treatments.(incorrect..actually it strengthens....as few more people who are interested in acupuncture and shiatsu treatments may come and may become member.)
(D)Fitness Express's health clubs is one of three clubs that have together accounted for 88% of health club memberships.(combine share of three clubs doesnt say anything about fitness express specifically....may be fitness express may have very large share and viceversa.)==>incorrect
(E)Despite a slight decline in membership price, sales of Fitness Express memberships have fallen in the last five years.(correct)==>as it tells together with decreased membership price sales of fitness express membership has decreased in the last five years while overall health care membership has increased during same period)

waiting for OA