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’triad of cardiac tamponade includes all except \nSelect and explain. \nA. Hypertension, B. Absent heart sounds, C. Raised JVP, D. Hypotension', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cardiac tamponade has hypotension', 'role': 'assistant'}]