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
Prophylactic antibiotic in surgical practice: 
Select and explain. 
A. is given orally, B. depends on individual preference, C. continued for a minimum of 7 days, D. first dose is given before induction of anesthesia
D: first dose is given before induction of anesthesia
Answer: D: first dose is given before induction of anesthesia 
Explanation: None