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B.O.D of (A)B.O.D = 3 (B) B.O.D = 18 (C...

B.O.D of
(A)B.O.D = 3
(B) B.O.D = 18
(C) B.O.D = 27
(D)B.O.D=8
when which water bodies given above very high concentration of organic matter ?

A

A and D

B

C and D

C

B and C

D

A and C

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