A 72-year-old with a prosthetic aortic valve presents stating, "I was told I have to take a medicine before I have a deep dental cleaning." Concurrent health issues include hypertension, type 2 diabetes, and dyslipidemia, currently at treatment goals. Medications include metformin, hydrochlorothiazide, telmisartan, and rosuvastatin. She has no drug allergies. Which of the following is the most appropriate next step in her care? A. amoxicillin 2 grams PO 30 to 60 minutes prior to the procedure...