Oxygen Dissociation Curve Shits Up At Altitude During Exercise, The Oxygen Dissociation Curve Shifts Because Of All But...?

During exercise, the oxygen dissociation curve shifts because of all but...? - oxygen dissociation curve shits up at altitude

During the year, the oxygen dissociation curve due to changes in all, but:

A. The increase in the partial pressure of CO2.
B. Increased lactic acid lowers the pH of the blood.
C. Increased exhaustion and fatigue of the muscles.
D. Strengthening the muscle activity increases the body temperature.