The correct answer is option C, Bituminous
Bituminous coal is found usually at the depth of 8,500 and it extends to much greater depths up to 20,000 feet below the earths surface. Lignite is found at shallow depths
However the depth of burial of coal is as follows –
a) Lignite – upto 4921 feet
b) Sub Bituminous – 4921 feet to 8202.1 feet
c) Bituminous - 8202.1 feet to 19685 feet
d) Anthracite – Greater than 19685 feet
