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
Golden period for treatment of open wounds is .....hours - 
Select and explain. 
A. 4, B. 6, C. 12, D. 24
A: 4
Answer: A: 4 
Explanation: Ans. is 'a' i.e., 4