Simplify the expression $$\frac{\sqrt{x} - \sqrt{y}}{\sqrt{x} + \sqrt{y}}$$, where x = 2 and y = 3.

A

$$2\sqrt{6} - 6$$

B

$$\sqrt{6} - 5$$

C

$$5 - 2\sqrt{6}$$

D

$$2\sqrt{6} - 5$$