Find the value of $$\frac{x^{2}}{y^{2}}$$+$$\frac{y^{2}}{x^{2}}$$-2

A

$$\frac{x}{2y}+\frac{y}{2x}$$

B

$$\frac{x-y}{2}$$

C

$$\frac{x}{y}+\frac{y}{x}$$

D

$$\frac{x}{y}-\frac{y}{x}$$