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': 'Low glucose in pleural effusion is seen in all, except \nSelect and explain. \nA. Dressler syndrome, B. Empyema, C. Malignant pleural effusion, D. Rheumatoid arthritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]