Which sum is equal to the expression StartFraction negative 5 x cubed 2 x squared 9 x 2 Over (x squared 2) squared EndFraction? StartFraction A Over x squared 2 EndFraction StartFraction B x C Over (x squared 2) squared EndFraction StartFraction A Over (x squared 2) squared EndFraction StartFraction B x C Over (x squared 2) squared EndFraction StartFraction A x B Over x squared 2 EndFraction StartFraction C x D Over (x squared 2) squared EndFraction StartFraction A x B Over (x squared 2) squared EndFraction StartFraction C x D Over (x squared 2) squared EndFraction