If $$\left(X^{2} + \frac{1}{x^{2}} = 18\right)$$, $$x > 0$$ what is the value of $$\left(x^{3} + \frac{1}{x^{3}}\right)$$?

A

$$36\sqrt{5}$$

B

$$40\sqrt{5}$$

C

$$46\sqrt{5}$$

D

$$34\sqrt{5}$$