This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'In severe exercise, decrease in pH is due to \nSelect and explain. \nA. Respiratory acidosis, B. Lactic acidosis, C. H+ retension, D. HC03- excretion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In case of sever exercise, lactic acid deposits in muscles due to anaerobic respiration by white muscle fibers, This results in fatigue Ref:Guyton and Hall textbook of medical physiology 12th edition ,pag number:96', 'role': 'assistant'}]