As per the recent survey conducted by the Quality Council of India, which railway stations have been named as the cleanest and dirtiest railway stations in India?
A. Darbhanga and Allahabad
B. Allahabad and Indore
C. Indore and Visakhapatnam
D. Visakhapatnam and Darbhanga
Answer: Option D
Visakhapatnam has a cleanest as per which year
When visakhapatnam has got cleanest for which year