Simplify the Following Expression Algebraically $\cos \left( \frac { 3 \pi } { 2 } - x \right)$

Multiple Choice

Simplify the following expression algebraically.
$\cos \left( \frac { 3 \pi } { 2 } - x \right)$

A) $\sin x$
B) $\frac { 3 } { 2 } \sin x$
C) $- \cos x$
D) $- \sin x$
E) $- \frac { 3 } { 2 } \sin x$