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: Physiology
[{'content': 'Normal capillar wedge pressure ? \nSelect and explain. \nA. 0-2 mm Hg, B. 5-10 mm Hg, C. 15-20 mm Hg, D. 20-30mm Hg', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 5-10 mm HgNormal capillary Wedge pressure is 4-12mm Hg. It is a measure of left atrial pressure.", 'role': 'assistant'}]