Which of the Following Is a Major Advantage of Interval

Which of the following is a major advantage of interval training in endurance athletes?

A) interval training does not cause overtraining
B) interval training allows the athlete to train at a higher total workload
C) interval training is physiologically more specific to endurance events
D) interval training does not cause overtraining, allows the athlete to train at a higher total workload, and is physiologically more specific to endurance events