A 70 year old female is seen in the emergency department and diagnosed with acute cholecystitis. She is being brought to the operating room for a laparoscopic cholecystectomy. What would be the most appropriate antimicrobial prophylaxis to prevent surgical site infection?
A. Pipercillin-tazobactam
B. Ampicillin-sulbactam
C. Cefazolin
D. None needed
E. Vancomycin