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': 'Pus formation in lacerated wound occurs in: \nSelect and explain. \nA. 12-24 hours, B. 24-48 hours, C. 48-72 hours, D. 1 week', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Normally, pus formation occurs in about 48 hours, but in a lacerated wound it occurs slightly earlier.', 'role': 'assistant'}]