Find the Rate of Change of the Function $f ( x ) = - \csc x - \cos x$

Multiple Choice

Find the rate of change of the function $f ( x ) = - \csc x - \cos x$ .

A) $\sin x + \sec x$
B) $\sin x + 1$
C) $\sin x - \tan x \sec x$
D) $\sin x \sin x$
E) $\csc x \cot x - \sin x$