Which of the following statements is true?

AYou should exercise for at least 20 minutes, five times a week to maintain cardiorespiratory endurance.

BIn order to develop muscular endurance, you should include three 30-minute sessions of anaerobic exercise each week.

CDaily stretching exercises should include a bouncing motion.

DAs long as you include a 5- to 10-minute warm-up in your exercise routine, you don't have to include cooldown exercises as well.