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': 'Exudative pleural effusion is seen in: March 2008 \nSelect and explain. \nA. Left ventricular failure, B. Nephrotic syndrome, C. Bacterial pneumonia, D. Hepatic failure', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Bacterial pneumonia', 'role': 'assistant'}]