Critical Reasoning

Recent research shows that training programs that include emphases on flexibility, highlighting activities such as yoga and pilates, are significantly more effective at preventing injury in athletes than are training programs that solely focus on strength and speed. The Bournemouth Football Club suffered fewer injuries than the Haleford Football Club this past season, so it can be concluded that Bournemouth's training program featured more flexibility activities than did the program at Haleford.

The argument is most vulnerable to criticism because it:

A)generalizes from too few data points.
B)uses its own conclusion as one of its major premises.
C)assumes that the consequence of one set of circumstances would not be produced by another.
D)fails to consult alternative research studies.
E)does not distinguish between incidence of injury and degree of injury.

What's the best approach to determine the answer? Can any experts show?