Vignette #1 John Is 35 and Interested in Gaining Muscle

Vignette #1 John is 35 and interested in gaining muscle mass and decides to check out the nutritional supplements at the local health food store. The clerk approaches him wearing a white lab coat; this immediately impresses John, who now thinks that the clerk is well informed. John explains that his goal is to gain the maximum muscle mass in the shortest time. The clerk is eager to assist John and says, "Let me show you the products that will benefit you most." Let's see if the clerk really knows what ergogenic aids are all about by answering these questions.
The clerk recommends John purchase coenzyme Q₁₀. Which statement describes a false claim attributed to this substance?

A) Coenzyme Q₁₀ is a lipid used by cells in energy metabolism.
B) Coenzyme Q₁₀ inreases performance and stamina in athletes.
C) Coenzyme Q₁₀ may play an antioxidant role.
D) Coenzyme Q₁₀ may conserve bone calcium.
E) Coenzyme Q₁₀ may increase oxygen use and stamina in patients with heart  disease.