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: Social & Preventive Medicine
[{'content': 'Which if the following is the ‘Yellow fever’ reference centre? \nSelect and explain. \nA. Haffkin’s institute, Mumbai, B. AIIMS, Delhi, C. NIN, Hyderabad, D. Central institute, kasauli', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]