This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System Pa 1, Subject name: Physiology
[{'content': 'Pulmonary capillary pressure is: \nSelect and explain. \nA. 5 mm Hg, B. 10 mm Hg, C. 20 mm Hg, D. 32 mm Hg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The average pulmonary capillary pressure is 10 mm Hg. Pulmonary capillary wedge pressure (which reflects LA pressure) is 5 mm Hg.', 'role': 'assistant'}]