If $$x + y + z = 0$$, then what is the value of $$\frac{x}{(yz)^2} + \frac{y}{(xz)^2} + \frac{z}{(xy)^2}$$?

A

$$\frac{xyz}{3}$$

B

$$\frac{3}{xyz}$$

C

xyz

D

$$\frac{1}{xyz}$$