The correct option is B All of the above
Industrial production has grown in India by more than 50−fold over the past century. Cement, Thermal power plants, sugars and oil refiners are all considered as heavily polluting industries. These contribute to the environment in terms of suspended particulate matter, gases and effluents. About 77 per cent of the industries contribute to water pollution while 15 per cent to air pollution and the remaining eight per cent to both air and water pollution.