Evaluate Where F(x, Y, Z) = 4x I $\sigma$ Is That Portion of the Plane 2x + 3y

Multiple Choice

Evaluate where F(x, y, z) = 4x i + 4y j + 4z k and $\sigma$ is that portion of the plane 2x + 3y + 4z = 12 which lies in the first octant and is oriented by upward unit normals.

A) 144
B) 16
C) 36
D) 72
E) 0