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: ENT
[{'content': 'Secondary hemorrhage after tonsillectomy develops: \nSelect and explain. \nA. Within 12 hrs, B. Within 24 hrs, C. Within 6 days, D. Within 1 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The main complication is hemorrhage which occurs in 3-5% patients', 'role': 'assistant'}]