Identify the $INCORRECT$ statement about Biological Oxygen Demand $(BOD)$.

  • A
    It is the amount of dissolved oxygen required by microorganisms for decomposing organic matter.
  • B
    It is expressed in milligram of oxygen per litre of water.
  • C
    More the level of microbial pollution,higher the $BOD$.
  • D
    Higher the $BOD$,higher the level of oxygen in the water.

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