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
An AIMS patients presents with fistula-in-ano. His CD4 count is below 50. What is the treatment of choice - 
Select and explain. 
A. Seton, B. Fistulectomy, C. None, D. Both
A: Seton
Answer: A: Seton 
Explanation: None