$$\sqrt[3]{\cos x - j \sin x}$$ is equal to

A

$$ (\cos x)^{\frac{1}{3}} - j(\sin x)^{\frac{1}{3}} $$

B

$$\sqrt[3]{\cos^2x -j\sin^2x}$$

C

$$ \cos \frac{x}{3} - j \sin \frac{x}{3}$$

D

$$ \sin \frac{x}{3} - j \cos \frac{x}{3}$$