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': "Ramkumar a 70-year-old hypertensive male Was admitted in the intensive care unit with transmural anterolateral myocardial infarction. His condition was stable till the fifth day of admission When he developed a pericardial friction rub and pleuritic chest pain which persisted despite narcotic and steroid therapy. On the seventh morning, he suddenly developed marked hypotension. On examination there was marked a 'tension of the jugular veins, accompanied a with electromechanical dissociation, Most likely, the patient had developed \nSelect and explain. \nA. Severe acute mitral regurgitation, B. Ventricular septal rupture o, C. Right ventricular infarction, D. External cardiac rupture", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]