A 66-year-old woman is undergoing elective hip replacement. She has no drug allergies and normal renal function. What is the most appropriate perioperative antimicrobial prophylaxis?ANo prophylaxis is required for clean orthopaedic proceduresBSingle preoperative dose of intravenous cefazolinCFive days of postoperative oral amoxicillin-clavulanateDDaily intravenous vancomycin for 3 daysESingle preoperative dose of intravenous ciprofloxacinCheck my answer