Final answer:
Med Rec should be performed both before and after surgery to ensure patient safety and proper medication administration throughout the patient care continuum.
Step-by-step explanation:
Medication reconciliation (Med Rec) should be performed at various points in the patient care process to ensure patient safety and maintain accuracy in medication administration. The correct answer to your question is C. Both A and B. It should be performed before surgery to account for any current medications the patient may be taking that could affect surgical outcomes or interact with anesthesia. It is equally important to perform Med Rec after surgery during the postoperative phase to update any changes in medication based on the surgery and to ensure the patient continues with the correct prescriptions when discharged.