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: Microbiology
[{'content': 'True about Legionella pneumonia is - \nSelect and explain. \nA. Acid fast, B. Can be isolated from lung biopsy, C. Gram positive, D. Sputum shows polymorphonuclear leukocytes with organism', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is `b' i.e., Can be isolated from lung biopsy . Legionella is gram negative and non-acid fast. . Legionella can be isolated from lung biopsy. . Sputum shows numerous neutrophils but no organism.", 'role': 'assistant'}]