After Prolonged Strenuous Exercise Has Stopped,heavy Breathing Will Often Continue

After prolonged strenuous exercise has stopped,heavy breathing will often continue for several minutes in order to provide the oxygen needed to

A) convert the lactic acid produced during exercise back into glycogen.
B) resynthesize creatine phosphate.
C) replace oxygen displaced from muscle myoglobin.
D) All of these choices
E) None of these choices