This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urethra & Penis, Subject name: Surgery
[{'content': 'In testicular torsion, surgery within how much time can save viability of testis: \nSelect and explain. \nA. 6 hours, B. 12 hours, C. 24 hours, D. 1 week', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) 6 hoursRef: Bailey 26th 1379* Testicular salvage rate of 100 % if the testis is untwisted within 6 hrs of torsion as compared to 20 % if surgery is delayed for 24 hrs', 'role': 'assistant'}]