This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pediatrics
[{'content': 'Adrenal hyperplasia due to 21 hydroxylase deficiency is treated with low dose: \nSelect and explain. \nA. Androgen, B. Estrogen, C. Cortisone, D. Anti androgen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: cRef: Pedia ghai, 6th ed, p. 497, Nelson, 17th ed, p. 1912', 'role': 'assistant'}]