John: In several months of going to the Apex Health Club almost every day in the early-morning hours, I have seen almost no one using the weight-training equipment designed to help increase muscle mass. Almost everyone uses only aerobic exercise machines, which are designed to help people burn fat. The Blown company is best known for dietary supplement products aimed at people trying to gain muscle mass, so Blown's plan to advertise just outside of the entrance to Apex Health Club is ill-conceived. Each of the following, if true, weakens John's argument EXCEPT
A. Most of Apex Health Club's members work in nearby buildings whose exercise rooms contain aerobic exercise machines of higher quality than those at the club.
B. Most members of Apex Health Club are aware that weight training is generally ineffective for individuals who have not consumed a pre-training meal 3 to 4 hours beforehand, while fat-burning exercise is most effective after eight or more hours of fasting.
C. Many members of Apex Health Club who do not train with weights share a household with people who are trying to increase muscle mass.
D. Customers of a nearby store that specializes in weight-training equipment must walk past the entrance of Apex Health Club to enter the store.
E. Blown has recently begun to produce fat-burning products aimed at aerobic exercisers.