This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Testis & Scrotum, Subject name: Surgery
[{'content': 'Treatment of a large hydrocele in an infant: \nSelect and explain. \nA. Repeated aspirations, B. Ligation of sac at the opening of inguinal canal, C. Herniotomy, D. Eversion of sac', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: c (Herniotomy)Ref: Bailey & Love, 24th ed, p. 1408 & 23rd ed, p. 1275', 'role': 'assistant'}]