Rewrite with Only Sin X and Cos X $\sin 2 x - \cos 2 x$

Multiple Choice

Rewrite with only sin x and cos x.
- $\sin 2 x - \cos 2 x$

A) $2 \sin ^ { 2 } x - 2 \sin x \cos x + 1$
B) $2 \sin x$
C) $2 \sin ^ { 2 } x - 2 \sin x \cos x - 1$
D) $2 \sin ^ { 2 } x + 2 \sin x \cos x - 1$