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
Secondary hemorrhage after tonsillectomy develops: 
Select and explain. 
A. Within 12 hrs, B. Within 24 hrs, C. Within 6 days, D. Within 1 months
C: Within 6 days
Answer: C: Within 6 days 
Explanation: The main complication is hemorrhage which occurs in 3-5% patients