Decreasing order of stability of $O_2, O_2^-, O_2^+$ and $O_2^{2-}$ is :

Question

( A ) $ O_2^- >O_2^{2-}> O_2^+ >O_2$
( B ) $O_2^{2-} > O_2^- > O_2 > O_2^+$
( C ) $O^+_2 > O_2 >O_2^- > O_2^{2-}$
( D ) $O_2 > O_2^+ > O_2^{2-} > O_2^-$