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': "In Legionnaire's disease, the culture medium used is: \nSelect and explain. \nA. Thayer-Main medium, B. BCYE medium, C. Chocolate agar, D. Bordet Gengou medium", 'role': 'user'}, {'content': 'Answer: B \nExplanation: BCYE medium', 'role': 'assistant'}]