Let $f ( x ) = \sinh ( \sin x )$

Multiple Choice

Let $f ( x ) = \sinh ( \sin x )$ Then $f ^ { \prime } ( x )$ is

A) $\sinh ( \cos x )$
B) $\cos x [ \cosh ( \sin x ) ]$
C) $\sin x [ \cosh ( \cos x ) ]$
D) $\cos x [ \sinh ( \sin x ) ]$
E) $\sin x [ \sinh ( \sin x ) ]$