Assertion (A) : The lower the concentration of `DO`, the the more polluted is the water sample. Reason (R) : Oxygen is consumed by microbes for the decomposition of organic matter present in water.A. Both A and R are true and R is the correct explanation of A.B. Both A and R are true but R is not correct explanation of A.C. A is true and R is falseD. A is false and R is true.

Assertion (A) : The lower the concentration of `DO`, the the more poll

1.	Assertion (A) : The lower the concentration of `DO`, the the more polluted is the water sample. Reason (R) : Oxygen is consumed by microbes for the decomposition of organic matter present in water.A. Both A and R are true and R is the correct explanation of A.B. Both A and R are true but R is not correct explanation of A.C. A is true and R is falseD. A is false and R is true.
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