Evaluate $f ( x , y , z ) = e ^ { x } \sin ( y ) \cos ( z )$

Multiple Choice

Evaluate $f ( x , y , z ) = e ^ { x } \sin ( y ) \cos ( z )$ at $\left( 0 , \frac { \pi } { 2 } , 0 \right)$

A) 1
B) 0
C) $e ^ { \frac { \pi } { 2 } }$
D) e