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: Medicine
[{'content': 'Left atrial filling pressure closely approximates? \nSelect and explain. \nA. Pulmonary capillary wedge pressure, B. Central venous pressure, C. Intrapleural pressure, D. Intracranial pressure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Pulmonary Capillary Pressure) Pulmonary Capillary Wedge Pressure (PCWP) Closely approximates Left Atrial (LA)Pressure', 'role': 'assistant'}]