Which of the following/(s) can be used for the reduction of nitrate in waste water?

Question: Which of the following/(s) can be used for the reduction of nitrate in waste water?
[A].

Growth of Hypomicrobium in presence of added methanol

[B].

Micrococcus denitrificans cells encapsulated in liquid membranes

[C].

Both (a) and (b)

[D].

Nitrosomonas europaen

Answer: Option C

Explanation:

No answer description available for this question.