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': 'Onion skin lesions, in the muscular layer of aeriole, are seen in - \nSelect and explain. \nA. SLE, B. Benign nephrosclerosis, C. Malignant nephrosclerosis, D. RPGN', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Malignant nephrosclerosis", 'role': 'assistant'}]