Which of the Following Is Equal to Limit $\lim _ { x \rightarrow 0 } \frac { \cos x } { e ^ { x } }$

Multiple Choice

Which of the following is equal to limit $\lim _ { x \rightarrow 0 } \frac { \cos x } { e ^ { x } }$ ?

A) -1
B) 0
C) 1
D) 2
E) Does not exist