The correct option is A Odisha
Manganese is mainly used in the
manufacturing of steel and ferro-manganese
alloy. Nearly 10 kg of manganese is required
to manufacture one tonne of steel. It is also
used in manufacturing bleaching powder,
insecticides and paints. Odisha is the largest producer of manganese
ores in India. It accounted for one-third of the
country’s total production in 2000-01.