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: Gynaecology & Obstetrics
Causes of virilization at puberty is all except 
Select and explain. 
A. PCOD, B. 5α - Reductase deficiency, C. All of the above, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: None