Find the Specified Quantity $y = - 5 \sin \left( 8 x + \frac { \pi } { 2 } \right)$

Multiple Choice

Find the specified quantity.
-Find the period of $y = - 5 \sin \left( 8 x + \frac { \pi } { 2 } \right)$ .

A) $\pi$
B) 5
C) 8
D) $\frac { \pi } { 4 }$