During anaerobic cell metabolism, athletes sometimes complain of short-term muscle fatigue. what can be causing this fatigue? check all that apply.

The likely cause of this fatigue are:

Lactic acid accumulating in the muscle. Accumulated lactic acid will force the muscle cells within our body to enter resting period so it could rebuild itself. This condition will cause a fatigue for the athlete
Acidity in muscle cells increases potassium loss from muscles, which will also cause a fatigue for the athlete 

The answer id letter d 90