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
Which if the following is the ‘Yellow fever’ reference centre? 
Select and explain. 
A. Haffkin’s institute, Mumbai, B. AIIMS, Delhi, C. NIN, Hyderabad, D. Central institute, kasauli
D: Central institute, kasauli
Answer: D: Central institute, kasauli 
Explanation: None