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': 'Bilaterally symmmetrical contracted scarred kidney is seen in- \nSelect and explain. \nA. Nephrosclerosis, B. Chronic glomerulonephriris, C. End stage renal disease, D. Chronic pyelonephritis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chronic glomerulonephritis", 'role': 'assistant'}]