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: Pathology
[{'content': 'Alpha I antitrypsin deficiency occurs in - \nSelect and explain. \nA. Emphysema, B. Bronchiectasis, C. Empyema, D. Bronchogenic carcinoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Emphysema", 'role': 'assistant'}]