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: Surgery
[{'content': "Buerger's disease affects all except - \nSelect and explain. \nA. Small aeries, B. Small veins, C. Medium size aeries, D. Multiparity", 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer 'd' Multiparity", 'role': 'assistant'}]