Find the Exact Value of the Expression Using the Provided $4 \sin 2 x \cos 2 x$

Multiple Choice

Find the exact value of the expression using the provided information.
- $4 \sin 2 x \cos 2 x$

A) $\frac { 1 } { 2 } \sin 16 x$
B) $\cos 8 x$
C) $\cos 4 x$
D) $2 \sin 4 x$