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Which of the following equations illustrates the Product-Sum Identity for $\sin{\alpha} \sin{\beta}$?

A

$\cfrac{1}{2}[\sin({\alpha} - {\beta}) + \sin({\alpha} + {\beta})]$

B

$\cfrac{1}{2}[\cos({\alpha} - {\beta}) + \sin({\alpha} + {\beta})]$

C

$\cfrac{1}{2}[\sin({\alpha} - {\beta}) + \cos({\alpha} + {\beta})]$

D

$\cfrac{1}{2}[\cos({\alpha} - {\beta}) - \cos({\alpha} + {\beta})]$

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