Which of the following steps are used to treat industrial wastes and r

1.	Which of the following steps are used to treat industrial wastes and reduce pollution?
A.	Only (i) and (iii)
B.	Only (i) and (ii)
C.	Only (ii) and (iii)
D.	(i), (ii) and (iii)
Answer» B. Only (i) and (ii)

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Which of the following steps are used to treat industrial wastes and reduce pollution?

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