If $$x > 0$$, and $$x^4 + \frac{1}{x^4} = 254$$, what is the value of $$x^5 + \frac{1}{x^5}$$?

A

$$717 \sqrt{2}$$

B

$$723 \sqrt{2}$$

C

$$720 \sqrt{2}$$

D

$$726 \sqrt{2}$$