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: Surgery
Which is not a feature of pilonidal sinus? 
Select and explain. 
A. Common is young males, B. Abscess formation, C. Jack knife position is used for surgery, D. Recurrance is not common
D: Recurrance is not common
Answer: D: Recurrance is not common 
Explanation: Recurrance is common in pilonodal sinus.