This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: ENT
Secondary hemorrhage is after how many days of tonsillectomy 
Select and explain. 
A. Within 6 hrs of operation, B. Within 24 hrs of operation, C. Within 3 weeks of operation, D. Within 3 months of operation
C: Within 3 weeks of operation
Answer: C: Within 3 weeks of operation 
Explanation: Secondary haemorrhage (occur from 3rd day onwards (5th to 10th day higher chances) due to sloughing of aeries caused by infection). It is the result of sepsis and premature separation of membrane. Ref : ENT textbook by Dhingra 6th edition Pgno : 430