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': 'Most abundant extracellular buffer is \nSelect and explain. \nA. Haemoglobin, B. Plasma proteins, C. Bicarbonate, D. Phosphate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bicarbonate buffer is rhe major buffer system in the body It is responsible for about 80%of extra cellular buffering Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:489,490,491', 'role': 'assistant'}]