Let $y = e ^ { \cos x }$ Then Dy Is

A)

Multiple Choice

Let $y = e ^ { \cos x }$ Then dy is

A) $- e ^ { \sin x } d x$
B) $e ^ { \sin x } d x$
C) $e ^ { \cos x } \sin x d x$
D) $- e ^ { \cos x } \sin x d x$
E) $- e ^ { \cos x } \sin x \ln x d x$