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 of the following is not a treatment method for fissure in ano? 
Select and explain. 
A. Sitz bath, B. Botox injection, C. Diltiaem gel, D. Seton’s procedure
D: Seton’s procedure
Answer: D: Seton’s procedure 
Explanation: Seton’s procedure is done for fistula in ano.