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
Primary closure of incised wounds must be done within: 
Select and explain. 
A. 2 hours, B. 4 hours, C. 6 hours, D. 12 hours
C: 6 hours
Answer: C: 6 hours 
Explanation: WOUNDS CAN BE CLOSED BY 

Primary suture: 

  - Clean wounds
  - Selected contaminated wounds after thorough wound toileting and debridement

Delayed primary suture:

 - Heavily contaminated wounds
 - Wounds in which wound toileting has been delayed for 6-8 hours

Left open to heal by secondary closure