This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gonads, Subject name: Pediatrics
Female pseudoherm aphroditism M.C. cause - 
Select and explain. 
A. CAH, B. Maternal ovarian tumor, C. Maternal drug intake, D. Chromosomal abnormalities
A: CAH
Answer: A: CAH 
Explanation: Ans. is 'a' i.e., CAHo Female pseudo hermaphroditism n Have internal genitalia female typeKaryo type XXMasculinisation of external genitaliaMost common - CAHCongenital adrenal hyperplasiao M-C. 21 hydroxylase deficiencyOther cause excess maternal androgen due to -Maternal ovarian tumor.Maternal drug intake.TreatmentHormonal therapy.Surgical correction.