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
[{'content': 'A 32-year-old asymptomatic woman has a rapidly rising, forceful pulse that collapses quickly. Which of the following is the most likely diagnosis? \nSelect and explain. \nA. mitral stenosis, B. mitral regurgitation, C. aortic stenosis, D. aortic regurgitation', 'role': 'user'}, {'content': "Answer: D \nExplanation: This pulse is seen in aortic regurgitation.The pressure in diastole is usually 50 mm Hg or lower. This is known as a water hammer or Corrigan's pulse. A bisferiens pulse (in the bisferiens wave form there are two pressure peaks) may be present as well. Systolic blood pressure is elevated.", 'role': 'assistant'}]