For Someone Who Just Started an Exercise Program, Muscle Soreness

For someone who just started an exercise program, muscle soreness and stiffness and the risk for injuries can be lessened or eliminated by:

A) decreasing the intensity, duration, and frequency of exercise progressively.
B) increasing the intensity, duration, and frequency of exercise progressively.
C) maintaining the intensity, duration, and frequency of exercise for four weeks.
D) maintaining the intensity, duration, and frequency of exercise for six weeks.