Multiple Choice Question

Simplify:

\[ \frac { \sin 7x - \sin 5x} { \cos 7x + \cos 5x}. \]

1) \( \tan x\)

2) \( \tan 2x \)

3) \( \tan 6x \)

4) \( \tan 12x \)

[Sorry, they want the multiple choice options to be a whole number, so pick from the above choices.]

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