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': 'The most common type of emphysema associated with a-1 antitrypsin deficiency - \nSelect and explain. \nA. Centriacinar, B. Panlobular, C. Paraseptal, D. Distal acinar', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Panlobular", 'role': 'assistant'}]