The more serious aspect of water pollution is caused by human activity which are
(A) Sewage, industrial and trade wastes
(B) Automobiles, Wood and coal
(C) Agricultural pollutants and physical pollutants
(D) Thermal and radioactive substances
Choose the correct answer from the options given below :
1
A, B, C only
2
D, A, B only
3
A, C, D only
4
B, C, D only