$BOD$ refers to

  • A
    the oxygen required for bacteria to grow in $1$ Litre of effluent
  • B
    the amount of oxygen consumed if all the organic matter in $1000 \ mL$ of water were oxidised by bacteria.
  • C
    the amount of oxygen released if all the organic matter in $1000 \ mL$ of water were oxidised by bacteria.
  • D
    the amount of oxygen released when all the organic matter was consumed by bacteria in $1$ litre of water

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