$$(\cos 5 \theta - i \sin 5 \theta)^{2}$$ is same as

A

$$\cos 10 \theta + 1 \sin 10 \theta$$

B

$$\cos 25 \theta - i \sin 25 \theta$$

C

$$(\cos \theta + 1 \sin \theta)^{-10}$$

D

$$(\cos \theta - i \sin \theta )^{-10}$$