This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
water hammer pulse is seen in ? 
Select and explain. 
A. Aoic regurgitation, B. mitral stenosis, C. Aoic stenosis, D. left ventricular failure
A: Aoic regurgitation
Answer: A: Aoic regurgitation 
Explanation: ref : harrisons 21st ed