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
Water hammer pulse is also known as: 
Select and explain. 
A. Corrigan's pulse, B. Duroziez pulse, C. Traube's sign, D. Quincke pulsation
A: Corrigan's pulse
Answer: A: Corrigan's pulse 
Explanation: A rapidly rising "water-hammer" pulse, which collapses suddenly as aerial pressure falls rapidly during late systole and diastole (Corrigan's pulse), and capillary pulsations, an alternate flushing and paling of the skin at the root of the nail while pressure is applied to the tip of the nail (Quincke's pulse), are characteristic of free Aoic regurgitation. Ref: Harrison's principle of internal medicine 17th edition, chapter 230.