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: Pathology
[{'content': 'Bloody pericardial effusion can be due to ? \nSelect and explain. \nA. Uremic pericarditis, B. Tuberculosis pericarditis, C. Tumour infiltration, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of the above", 'role': 'assistant'}]