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
[{'content': "Most important step in the repair of an indirect inguinal hernia is : \nSelect and explain. \nA. Herniotomy, B. Narrowing of the internal ring, C. Bassini' s repair, D. Transfixation of the neck of the sac", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Most important step of hernia repair is narrowing of internal ring.', 'role': 'assistant'}]