Which statement is true?

A. Improving cardiorespiratory endurance requires a combination of aerobic and muscle fitness activities.

B. Of the 11 parts of fitness, cardiorespiratory endurance is the most important because those who have it receive many health and wellness benefits, including a chance for a longer life.

C.  Improving cardiorespiratory endurance will improve your overall health but will not affect your appearance.

D. Of the 11 parts of fitness, cardiorespiratory endurance provides the most benefit to athletes such as runners and soccer players.