Bihar State (before separation) had how many 'Industrial Area Development Authorities'?

A. Six, viz., Adityapur, Bokaro, Patna, Ranchi, Darbhanga and Muzaffarpur

B. Five, viz., Adityapur, Bokaro, Darbhanga, Muzzaffarpur and Patna

C. Seven, viz., Adityapur, Bokaro, Patna, Darbhanga, Muzaffarpur, Ranchi and Bhojpur

D. Four, viz., Adityapur Muzaffarpur, Bhojpur and Khagaria

Answer: Option A