If $$x > 0$$ and $$x^4 + \frac{1}{x^4} = 142$$, what is the value of $$x^7 + \frac{1}{x^7}$$?

A

$$1561\sqrt{14}$$

B

$$1563\sqrt{14}$$

C

$$1560\sqrt{14}$$

D

$$1562\sqrt{14}$$