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': 'In congenital adrenal hyperplasia, deficient enzyme is - most womon \nSelect and explain. \nA. 11(3 hydroxylase deficiency, B. 21 a hydroxylase deficiency, C. 3a hydroxylase deficiency, D. 17a hydroxylase deficiency', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 21-a Hydroxylase Congenital adrenal hyperplasia (CAH) Group of AR disorder MC adrenal disorder in childhood Most common 21-hydroxylase deficiency In 21a-hyroxylese deficiency There is deficiency of mineralocoicoids & glucocoicoid. This leads to hypoglycemia, hyponatremia", 'role': 'assistant'}]