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': 'Nakayama strain used for which vaccine ? \nSelect and explain. \nA. Typhoid, B. Chicken pox, C. Japanese encephalitis, D. Yellow fever', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Strains used for JE vaccines:-\n\nNakayama strain\nBeijing strain', 'role': 'assistant'}]