Miles, a 62-year-old African American male, has been treated for hypertension for 15 years. He is currently complaining of wheezing during exercise. Chest palpitation reveals displacement of the point of maximal impact of the heart. Echocardiogram confirms enlargement of the heart.
a) Coronary artery disease
b) Cardiomyopathy
c) Valvular heart disease
d) Arrhythmia