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
[{'content': 'A female patient Chandani develops chest pain which is not associated with exercise and chest auscultation shows multiple non ejection clicks. The investigation which is used to diagnose the disease is : \nSelect and explain. \nA. Echocardiography, B. Pyrophosphate scan, C. Thallium 201 scan, D. ECG', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Echocardiography) The investigation of choice in MVP is echocardiography. Two dimensional echocardiography is paicularly effective in identifying the abnormal position and prolapse of mitral valve leaflets.', 'role': 'assistant'}]