What is the correct increasing order of $C-O$ bond length in $CO$,$CO_3^{2-}$,and $CO_2$?

  • A
    $CO_3^{2-} > CO_2 < CO$
  • B
    $CO_2 < CO_3^{2-} < CO$
  • C
    $CO < CO_3^{2-} < CO_2$
  • D
    $CO < CO_2 < CO_3^{2-}$

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