This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Pulsus bisferiens pulse is characteristic of (REPEATED QUESTION) 
Select and explain. 
A. Aoic stenosis and aoic regurgitation, B. Aoic regurgitation, C. Hyperophic obstructive cardiomyopathy, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Pulsus bisferiens is an increased pulse with a double systolic peak separated by a distinct mid-systolic dip. Causes include Aoic regurgitation and concomitant Aoic stenosis and regurgitation. It is also seen in hyperophic obstructive cardiomyopathy. Reference : MacLeod's Clinical Examination, 13th Edition, page no : 111.