Heavy weight lifting was for long considered the most effective muscle-building exercise. However, through recent studies conducted in hundred gymnasiums across the state where most amateur bodybuilders workout, it was found that well above eighty percent of heavy weight lifters suffered from serious damage to their muscles during their workouts. Citing these statistics, some bodybuilding experts argue that heavy weight lifting should not be taken up by amateur bodybuilders.
Which one of the following, if true, most weakens the criticism against heavy weight lifting by amateur bodybuilders?
A. The number of injuries during amateur heavy weight lifting workouts has gone up by thirty percent in the past two years.
B. Many of the amateurs who suffered muscle damage during heavy weight lifting workouts were first-time heavy weight lifters.
C. Heavy weight lifting workouts, when carried under expert guidance, are more effective and safer than when undertaken without guidance by amateurs.
D. Among the amateurs who engaged in heavy weight lifting, only those with a history of injuries suffered muscle damage.
E. Heavy weight lifting can be fatal to those with heart troubles.
