This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Causes of pulsus bisferiens 
Select and explain. 
A. LV failure, B. Cardiac tamponade, C. Hypertrophic cardiomyopathy, D. Constrictive pericarditis
C: Hypertrophic cardiomyopathy
Answer: C: Hypertrophic cardiomyopathy 
Explanation: Pulsus bisferiens(2 systolic peaks) is seen in

Aortic regurgitation +/aortic stenosis 
Hypertrophic cardiomyopathy