A) Singhbhum, Balaghat, Alwar, Jhunjhunu
B) Rourkela, Bhilai, Bokaro, Durgapur
C) Bellary, Belgaum, Kendujhar, Sundergarh
D) Korba, Bokaro, Ranijang, Jharia
E) None of these
Correct Answer: B
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