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
Most important step in the repair of an indirect inguinal hernia is : 
Select and explain. 
A. Herniotomy, B. Narrowing of the internal ring, C. Bassini' s repair, D. Transfixation of the neck of the sac
B: Narrowing of the internal ring
Answer: B: Narrowing of the internal ring 
Explanation: Most important step of hernia repair is narrowing of internal ring.