This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Influenza, Subject name: Social & Preventive Medicine
[{'content': 'Vaccine administered by following route is \nSelect and explain. \nA. Typhoral live, B. H1n1 killed, C. H1n1 live, D. Yellow fever live', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hlnl live (Intranasal route)', 'role': 'assistant'}]