Express the Function as a Trigonometric Function of X $\tan 4 x$

Express the function as a trigonometric function of x.
- $\tan 4 x$

A) $\frac { 4 \tan x - 3 \tan ^ { 4 } x } { 1 + \tan ^ { 3 } x - 6 \tan ^ { 2 } x }$
B) $\frac { 4 \tan x - 3 \tan ^ { 3 } x } { 1 + \tan ^ { 4 } x - 6 \tan ^ { 2 } x }$
C) $\frac { 3 \tan x - \tan ^ { 3 } x } { 1 - 3 \tan ^ { 2 } x }$
D) $\frac { 4 \tan x - 4 \tan ^ { 3 } x } { 1 + \tan ^ { 4 } x - 6 \tan ^ { 2 } x }$

Correct Answer:

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