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
Treatment surgery for fissure in ano 
Select and explain. 
A. Lateral sphinterotomy, B. Fissurectrny, C. Seton, D. None
A: Lateral sphinterotomy
Answer: A: Lateral sphinterotomy 
Explanation: Answer- A. Lateral sphinterotomyConservative t/tStool bulking agents and stool softnersNitric oxide or Glyceryl tinitrateDilatation of the sphincter under GAlaterd anal sphincterotomy - the intetnal sphincter is divided away from the ssure itself - usually either in the rigltt or the left lateral positionAnal advancement flap