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

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

A) $3 \sin x - 4 \sin ^ { 3 } x$
B) $1 - 8 \sin ^ { 2 } x \cos ^ { 2 } x$
C) $4 \sin x \cos ^ { 3 } x - 4 \sin ^ { 3 } x \cos x$
D) $\cos ^ { 3 } x - 3 \sin ^ { 2 } x \cos x$

Correct Answer:

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