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': 'All are decreased in infiltrative lung disease, Except \nSelect and explain. \nA. Vital capacity, B. Alveolar arterial difference in PaO2, C. Total lung capacity, D. Lung compliance', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]