Explanation

The first modern industries in India were coal mining (begun at Raniganj in 1774), cotton textiles (early mills such as Fort Gloster in 1818 and the first successful Bombay mill in 1854) and jute (the first mill at Rishra in 1855). Steel arrived much later with TISCO in 1907, while tea, sugar and silk were plantation or traditional industries rather than early factory industries. Hence cotton, jute and coal-mines form the correct set.