After the First Few Minutes of Constant-Load,submaximal Exercise,VO₂ Reaches Steady

Multiple Choice

After the first few minutes of constant-load,submaximal exercise,VO₂ reaches steady state,indicating that

A) the ATP demand is being met aerobically.
B) levels of lactic acid in the blood are very high.
C) the exercise can be continued indefinitely without fatigue.
D) the oxygen uptake is not sufficient to meet the ATP demand.