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': 'Thickening of pulmonary memb. is seen in \nSelect and explain. \nA. Asthma, B. Emphysema, C. Bronchitis, D. Skeletal defect', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]