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': 'Spirometry measures all of the following, except: \nSelect and explain. \nA. Tidal volume, B. Vital capacity, C. FEV, D. None of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None of the above', 'role': 'assistant'}]