The correct sequence which shows decreasing order of the ionic radii of the elements is

Question

( A ) $O_{2–} > F^{–} < Na^{+} > Mg^{2+} < Al^{3+}$
( B ) $Al^{3+} > Mg^{2+} > Na^{+} > F^{-} > O^{2-}$
( C ) $O^{2–} > F^{–} > Na^{+} > Mg^{2+} > Al^{3+}$
( D ) $Na^{+} > Mg^{2+} > Al^{3+} > O^{2–} > F^{–}$