This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'A postoperative patient with pH 7.25, MAP (mean arterial pressure) 60 mm of Hg treated with: \nSelect and explain. \nA. IV sodium bicarbonate, B. Only normal saline, C. Fluid therapy with CVP monitoring, D. Fluid restriction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]