Complete the Identity $$\frac { 2 \cot x } { 1 + \cot ^ { 2 } x } = ?$$

Multiple Choice

Complete the identity.
- $$\frac { 2 \cot x } { 1 + \cot ^ { 2 } x } = ?$$

A) $\sin 2 x$
B) $\cos 2 x$
C) $\cot 2 x$
D) $\tan 2 x$