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
[{'content': 'Preferred time forprophylacticantibiotic administration for surgery? \nSelect and explain. \nA. 1 day befor surgery, B. I.M. 6 hrs before surgery, C. At the time of induction of anaesthesia, D. I.V. during surgery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans is C i.e. At the time of induction of anaesthesia "The appropriate antibiotic is chosen before surgery and administered before the skin incision is made."-Sabiston 18/e', 'role': 'assistant'}]