A 72-year-old woman presents to the clinic for evaluation of…

A 72-year-old woman presents to the clinic for evaluation of hypertension. Her BP is 155/90 mmHg and pulse is 55 bpm. Physical examination is unremarkable. ECG shows normal sinus rhythm and echocardiogram shows left ventricular hypertrophy with normal ejection fraction (66%). Which of the following is the MOST appropriate initial treatment for this patient’s BP?