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': "Beck's Triad is seen in - \nSelect and explain. \nA. Constrictive Pericarditis, B. Cardiac tamponade, C. Right ventricular myocardial infarction (RVM), D. Restrictive cardiomyopathy", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]