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: Medicine
Cause of large kidney in CRF are a/e 
Select and explain. 
A. DM, B. Amyloidosis, C. Benign nephrosclerosis, D. Diffuse GN
C: Benign nephrosclerosis
Answer: C: Benign nephrosclerosis 
Explanation: None