A 62 year-old man presents to your office complaining of sharp chest pains radiating to his left shoulder during strenuous physical activities. He states that his symptoms are relieved with rest. On further questioning, he reports that his father and mother died of myocardial infarction in their late 50s. His physical examination is unremarkable. His electrocardiogram and echocardiogram are normal. Coronary angiogram revealed a stenosed right coronary artery without overt obstruction. According to American College of Cardiology and American Heart Association guidelines, he should be started on which of the following medications?
