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': 'FEV1/FEVC ratio is decreased in all,except : \nSelect and explain. \nA. Bronchiectasis, B. Emphysema, C. Chronic bronchitis, D. Tuberculosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]