This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sutures and Anastomoses, Subject name: Surgery
All of the following decreases the risk of surgical site infection except: 
Select and explain. 
A. IV antibiotics at induction of anesthesia, B. Staff should always wash their hands between patients, C. Preoperative shaving, D. Avoid hypothermia perioperatively
C: Preoperative shaving
Answer: C: Preoperative shaving 
Explanation: AVOIDING SURGICAL SITE INFECTIONS: - Staff should be always wash their hands between patients. - Preoperative shaving should be avoided if possible ( Preoperative clipping of hair is preferred ) - Antiseptic skin preparation should be standardized - Attention to theatre technique and discipline - Avoid hypothermia perioperatively and ensure supplemental oxygenatin in recovery.