Causes of pulsus bisferiens: (A) LV failure, (B) Cardiac tamponade, (C) Hypertrophic cardiomyopathy, (D) Constrictive pericarditis
Answer is C. Pulsus bisferiens(2 systolic peaks) is seen in

Aortic regurgitation +/aortic stenosis 
Hypertrophic cardiomyopathy