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': 'Burst abdomen most commonly occurs on the \nSelect and explain. \nA. 2nd day, B. 3rd day, C. 7th day, D. 9th day', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., 7"\' day', 'role': 'assistant'}]