Correct decreasing order of bond order of oxygen species in $I$ to $IV$

$(I)$   $Na_2O_2$

$(II)$  $O_2 [AsF_6]$

$(III)$  $CsO_2$

$(IV)$  $O_2$

  • A

    $(II), (III), (IV) , (I)$

  • B

    $(II), (III), (I), (IV)$

  • C

    $(IV) , (III), (II), (I)$

  • D

    $(II), (IV), (III) , (I)$

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