Oxygen Consumption Increases with Exercise Due to the Fact That

Oxygen consumption increases with exercise due to the fact that the contracting muscles are doing work and require ATP to produce the contractions.
A) How does the body meet the increased demand for oxygen?
B) Calculate the oxygen consumption of a runner using the following information:
Heart Rate: 130 bpm; Stroke Volume: 270 mL/beat;
Arterial oxygen content: 250 mL O₂/L blood,