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
Which of the following is not a feature of pansystolic murmur? 
Select and explain. 
A. Atrial septal defect, B. Ventricular septal defect, C. Mitral regurgitation, D. Mitral stenosis
D: Mitral stenosis
Answer: D: Mitral stenosis 
Explanation: None