The value of $$\frac{(x-y)^{3}+(y-z)^{3}+(z-x)^{3}}{({x^{2}-y^{2})^{3}+ (y^{2}-z^{2})+(z^{2}-x^{2})^{3}}}$$ where x $$\neq$$ y $$\neq$$ z, is:

A

0

B

$$\frac{1}{(x+y+z)}$$

C

$$\frac{1}{(x+y)(y+z)(z+x)}$$

D

1