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
All of following may be causes of precocious pubey in girls except - 
Select and explain. 
A. Hypothalamic hamaoma, B. Mc Cuone Albright syndrome, C. Granulosa cell tumor of human ovary, D. Congential 21-a hydroxylase deficiency
D: Congential 21-a hydroxylase deficiency
Answer: D: Congential 21-a hydroxylase deficiency 
Explanation: Ans. is 'd' i.e., Congenital 21-hydroxylase o Congenital 21 hydroxylase deficiency causes precocious pubey in male due to excess of androgens. o In female, it results in virilization.