This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Non-ejection clicks are heard in 
Select and explain. 
A. Aortic stenosis, B. Atrial myxoma, C. Mitral regurgitation, D. Mitral valve prolapse
D: Mitral valve prolapse
Answer: D: Mitral valve prolapse 
Explanation: (D) Mitral valve prolapse > Mitral valve prolapse displacement of mitral leaflet into left atrium.