Select the correct order of ionic radii.

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, 
the atomic radius increases from top to bottom in a group and decreases from left to right across a period.

${\mathrm{Te}}^{2-}>{\mathrm{Se}}^{2-}>{\mathrm{S}}^{2-}>{\mathrm{O}}^{2-}$

The correct option is A.