This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Emphysema is due to: \nSelect and explain. \nA. Decreased surface area, B. Increased solubility, C. Increased concentration gradient, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Emphysema is due to decreased surface are It is due to alfa 1 anti trypsin deficiency due to which membrane gets destroyed and surface is reduced', 'role': 'assistant'}]