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
All of following features are similar in androgen insensitivity syndrome and Mullerian agenesis except 
Select and explain. 
A. Absent Mullerian duct, B. Absent Wolffian duct, C. Primary amenorrhea, D. Normal axillary hair
D: Normal axillary hair
Answer: D: Normal axillary hair 
Explanation: Public and axillary hair is absent in androgen insensitivity syndrome, whereas normal in mullerian agenesis.