This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypertension, Subject name: Medicine
[{'content': 'Commonest cause of sustained severe hypertension in children: \nSelect and explain. \nA. Endocrine causes, B. Coarctation of aorta, C. Renal parenchyma disease, D. Pheochromocytoma', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' Renal parenchymal disease Most common cause of persistent hypertension in child is - Intrinsic Renal DiseaseIntrinsic renal diseases causing persistent hypertensionChronic glomerulonephritis (Most common).Chronic pyelonephritisObstructive uropathyRenal tumours", 'role': 'assistant'}]