Which of the following describes how the cardiovascular system works with the respiratory system to provide oxygen to muscles?

A. Respiratory system: inhalation of oxygen and exhalation of carbon dioxide. Alveoli/capillaries: site of gas exchange. Cardiovascular system: pumps blood and delivers oxygen to muscle cells.

B. Cardiovascular system: inhalation of oxygen and exhalation of carbon dioxide. Alveoli/capillaries: site of gas exchange. Respiratory system: pumps blood and delivers oxygen to muscle cells.

C. Respiratory system: inhalation of oxygen and exhalation of carbon dioxide. Trachea/capillaries: site of gas exchange. Cardiovascular system: pumps blood and delivers oxygen to muscle cells.

D. Respiratory system: inhalation of oxygen and exhalation of carbon monoxide. Arteries/capillaries: site of gas exchange. Cardiovascular system: pumps blood and delivers oxygen to muscle cells.