Find the Derivative of Y $$y = \ln ( \operatorname { sech } ( 4 x + 5 ) )$$

Multiple Choice

Find the derivative of y.
- $$y = \ln ( \operatorname { sech } ( 4 x + 5 ) )$$

A) $\tanh ( 4 x + 5 )$
B) $- \tanh ( 4 x + 5 )$
C) $- 4 \tanh ( 4 x + 5 )$
D) $\frac { 4 } { \operatorname { sech } ( 4 x + 5 ) }$