This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pediatrics
[{'content': 'The most common cause of renal scarring in a 3 years old child is: \nSelect and explain. \nA. Trauma, B. Tuberculosis, C. Vesicoureteral reflux induced pyelonephritis, D. Interstitial nephritis', 'role': 'user'}, {'content': "Answer: C \nExplanation: c. Vesicoureteral reflux induced pyelonephritis(Ref: Nelson's 20/e p 2562-2567Ghai 8/e p 485-486)Most common cause of renal scarring in a child is VUR-induced pyelonephritis.", 'role': 'assistant'}]