Which of the following pair of ions is isoelectronic and isotructural?

A

$${Clo_{3}}^{-},{CO_{3}}^{2-}$$

B

$${SO_{3}}^{2-},{Clo_{3}}^{-}$$

C

$${SO_{3}}^{2-},{NO_{3}}^{-}$$

D

$${CO_{3}}^{2-},{NO_{3}}^{-}$$