In which of the following molecules / ions $BF_3,NO{_2}{^-},NH{_2}{^-},H{_2}$ and the central atom is $sp^2$ hybridized ?

Question

( A ) $NH_2{^-}and H_2O$
( B ) $NO{_2}{^-}and NH_2$
( C ) $BF_3,NO{_2}{^-}$
( D ) $NH_2{^-}and H_2O$