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
Pre-auricular sinus 
Select and explain. 
A. Is always unilateral, B. Usually painful, C. May be in close proximity to greater auricular nerve, D. Recurrence after excision is common
D: Recurrence after excision is common
Answer: D: Recurrence after excision is common 
Explanation: None