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
All are causea of granular contracted kidney except 
Select and explain. 
A. Benign nephrosclerosis, B. Diabetes mellitus, C. Chronic pyelonephritis, D. Chronic glomerulonephritis
B: Diabetes mellitus
Answer: B: Diabetes mellitus 
Explanation: Causes of contracted kidney *chronuc glomerulonephritis *chronic pyelonephritis *benign nephrosclerosis causes of enlarged kidney Ammyloidosis Diabetic renal disease Polycystic kidney disease Hydronephrosis