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': 'In a patient with myocardial infraction the valvular lesion commonly seen in \nSelect and explain. \nA. Aoic stenosis, B. Mitral regurgitation, C. Aoic regurgitation, D. Septal defect', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Reg Harrison 19 th ed pg 1524 The most common valvular lesion seen in MI is mitral regurgitation.', 'role': 'assistant'}]