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': 'Causes of recurrent hernia - \nSelect and explain. \nA. Absorbable sutures, B. Sliding hernia, C. Missed sac, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. All options are correct i.e., 'a' i.e. Absorbable sutures, 'b' i.e. Sliding hernia, 'c' i.e. Missed sac", 'role': 'assistant'}]