This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
In testicular torsion, surgery within how much time can save bility of testis 
Select and explain. 
A. 6 hr, B. 12 hr, C. 24 hr, D. 1 week
A: 6 hr
Answer: A: 6 hr 
Explanation: The sooner the operation is done, the better the outlook to save your testis. Ideally, the operation should be done within 6-8 hours of symptoms. If treated either manually or surgically within six hours, there is a high chance (approx. 90%) of saving the testicle. At 12 hours the rate decreases to 50%; at 24 hours it drops to 10%, and after 24 hours the ability to save the testicle approaches 0