Evaluate $\iint _ { S } \mathbf { F } \cdot d \mathbf { S }$

Multiple Choice

Evaluate $\iint _ { S } \mathbf { F } \cdot d \mathbf { S }$ , where $\mathbf { F } = ( x , y , z ) = y \mathbf { j } - z \mathbf { k }$ and S is the cube bounded by $x = \pm 1 , \quad y = \pm 1 , \quad z = \pm 1$ .

A) $16$
B) $8$
C) $- 8$
D) $1$
E) $32$
F) $4$
G) $- 4$
H) $0$