Complete the Identity $$\frac { \sin 5 x + \sin 7 x } { \cos 2 x + \cos 4 x } = ?$$

Multiple Choice

Complete the identity.
- $$\frac { \sin 5 x + \sin 7 x } { \cos 2 x + \cos 4 x } = ?$$

A) $\frac { \sin 6 x } { \cos 3 x }$
B) $\tan \frac { 5 } { 2 } x + \tan \frac { 7 } { 4 } x$
C) $\frac { \sin 12 x } { \cos 6 x }$
D) $\frac { \cos 12 x } { \sin 6 x }$