This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics And Genetic Disorders, Subject name: Pediatrics
[{'content': 'Most common enzyme deficiency among these which leads to childhood hypertension: \nSelect and explain. \nA. 21 hydroxylase deficiency, B. 11-beta hydroxylase deficiency, C. 3-beta hydroxysteroid dehydrogenase deficiency, D. 17-alpha hydroxylase deficiency', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. 11-beta hydroxylase deficiencyChildhood hypertension and salt retention are seen in children with 11-beta hydroxylase deficiency and 17-alpha hydroxylase deficiency. The second most common cause of CAH (after 21 hydroxylase deficiency) is 11-beta hydroxylase deficiency.', 'role': 'assistant'}]