Let $y = \csc ( 5 x ) .$ Then $y ^ { \prime }$

Multiple Choice

Let $y = \csc ( 5 x ) .$ Then $y ^ { \prime }$ is

A) $5 \csc ( 5 x ) \cot ( 5 x )$
B) $- 5 \csc ( 5 x ) \cot ( 5 x )$
C) $5 \csc x \cot x$
D) $- 5 \csc x \cot x$
E) $- 5 \csc ^ { 2 } x$