Which of the following statement is correct about  ${\mathrm{I}}_3^{+}\text{and }{\mathrm{I}}_3^{-}$ molecular ions ?

• A

  Number of lone pairs at central atoms are same in both molecular ions.

• B

  Hybridization of central atoms in both ions are same.

• C

  Both are polar species.

• D

  Both are planar species.