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': "Anaerobic bacteria can be cultured in \nSelect and explain. \nA. L-J medium, B. Robertson cooked meat medium, C. Loeffler's medium, D. Sabouraud's agar", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]