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: Radiology
[{'content': "Renal aery stenosis may occur in all of the following, except: \nSelect and explain. \nA. Atherosclerosis, B. Fibromuscular dysplasia, C. Takayasu's aeritis, D. Polyaeritis nodosa", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. Polyaeritis nodosa', 'role': 'assistant'}]