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
In Volkman's ischemia, surgery should be done; 
Select and explain. 
A. Immediately, B. After 6 hours, C. 24 hours, D. 72 hours
A: Immediately
Answer: A: Immediately 
Explanation: A i.e. Immediate