$BOD$ is a measure of what?

  • A
    It is a measure of the amount of organic matter in water indirectly.
  • B
    It is a measure of the amount of inorganic matter in water indirectly.
  • C
    It is a measure of the number of microorganisms in water indirectly.
  • D
    It is a measure of the type of pathogenic microorganisms in water indirectly.

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