A 37-year-old man has headache and transient visual loss. He has not seen a physician in more than 10 years and takes no medication. He was told many years ago that he had high blood pressure but did not follow up with a health care provider. Initial physical examination shows him to be awake but slightly confused and irritable. He is afebrile, HR is 72 /min, and BP Is 268/176 mmHg, Fundoscopy exam reveals arteriovenous crossing changes and several hemorrhages, but no papilledema. Cardiac examination shows an S4 gallop; the lungs are clear. There is no peripheral edema. Which of the following is the best treatment option for this patient?