Given below are two statements :
Statement I : Non-biodegradable wastes are generated by the thermal power plants.
Statement II : Bio-degradable detergents leads to eutrophication.
In the light of the above statements, choose the most appropriate answer from the option given below:

Statement I says that non-biodegradable wastes are generated by thermal power plants. Thermal power plants burn coal and produce fly ash, bottom ash, and flue gas pollutants. These solid wastes are non-biodegradable. Statement I is true.

Statement II says that biodegradable detergents lead to eutrophication. Even biodegradable detergents contain phosphates, and when these phosphates enter water bodies, they serve as nutrients promoting excessive algal growth, leading to eutrophication. Statement II is true.

Since both statements are true, the correct answer is option (4).