Use the Product-To-Sum Formula to Write the Given Product as a Sum

Use the product-to-sum formula to write the given product as a sum or difference.
$$6 \sin \frac { \pi } { 8 } \cos \frac { \pi } { 8 }$$

A) $3 \sin \frac { \pi } { 8 } + 3 \cos \frac { \pi } { 8 }$
B) $3 \sin \frac { \pi } { 4 }$
C) $3 + 3 \cos \frac { \pi } { 16 }$
D) $3 - 3 \cos \frac { \pi } { 16 }$
E) $- 3 \sin \frac { \pi } { 16 }$

Correct Answer:

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