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
NEERI headquaer is situated at ? 
Select and explain. 
A. Delhi, B. Cuttack, C. Calcutta, D. Nagpur
D: Nagpur
Answer: D: Nagpur 
Explanation: Ans. is 'd' i.e., Nagpur National Environmental Engineering Research Institute (NEERI) Headquaer is at Nagpur.