If $$\cos\alpha + \beta = \frac{3}{5}$$, $$\sin(\alpha - \beta) = \frac{5}{13}$$ and $$0 < \alpha, \beta < \frac{\pi}{4}$$, then $$\tan 2\alpha$$ is equal to:

A

$$\frac{21}{16}$$

B

$$\frac{63}{52}$$

C

$$\frac{33}{52}$$

D

$$\frac{63}{16}$$