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': 'All are causea of granular contracted kidney except \nSelect and explain. \nA. Benign nephrosclerosis, B. Diabetes mellitus, C. Chronic pyelonephritis, D. Chronic glomerulonephritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Causes of contracted kidney *chronuc glomerulonephritis *chronic pyelonephritis *benign nephrosclerosis causes of enlarged kidney Ammyloidosis Diabetic renal disease Polycystic kidney disease Hydronephrosis', 'role': 'assistant'}]