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
Which of the following is the cause of wide pulse pressure 
Select and explain. 
A. Aoic stenosis, B. Aoic regurgitation, C. Mitral stenosis, D. Tricuspid stenosis
B: Aoic regurgitation
Answer: B: Aoic regurgitation 
Explanation: Signs of Aoic Regurgitation : *Collapsing pulse *Increased pulse pressure *Quincke's sign, Duroziez's sign, de Musset's sign *Murmers : early diastolic murmer, Austin Flint murmur *displaced apex beat, 4th hea sound Reference : Davidson, 23rd Edition, page no : 524.