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 peeling of renal vessels is seen in \nSelect and explain. \nA. Malignant Hypertension, B. SLE, C. Diabetic nephropathy, D. Renal artery stenosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In cases of malignant Hypertension, Concentric hyperplasia of smooth muscles will give rise to onion peel appearance.', 'role': 'assistant'}]