Select the correct statement from the following | Real Paper AI

Select the correct statement from the following

Choose Your Option

A. Activated sludge-sediment in settlement tanks of the sewage treatment plant is a rich source of aerobic bacteria

B. Methanobacterium is an aerobic bacterium found in the rumen of cattle

C. Biogas is produced by the activity of aerobic bacteria on animal waste

D. Biogas, commonly called gobar gas, is pure methane