If asked to give your friend advice about a muscular fitness program, the most accurate response would be that . A. a well-designed muscular fitness program involves a daily commitment to lift weights B. the proper way to increase your muscular fitness is to work each muscle group one day a week with days of rest at the end of the week C. a well-designed muscular fitness program involves a commitment to training at least three times a week, allowing for days of rest in between D. the proper way to increase your muscular fitness is to work out every muscle each day of the week but to vary the activities