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: Pediatrics
[{'content': 'Most common enzyme deficiency leading to childhood hypertension is – \nSelect and explain. \nA. 17–Alpha hydroxylase, B. 21–Beta hydroxylase, C. 11–Beta hydroxylase, D. 3–Beta hydroxy steroid dehydrogenase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Salt retention and hypertension is seen in 17-α hydroxylase deficiency and 11-β hydroxylase deficiency.\n11-β hydroxylase deficiency is more common.\n17-α hydroxylase deficiency is an uncommon form of congenital adrenal hyperplasia.', 'role': 'assistant'}]