Evaluate the Surface Integral of G Over the Surface S $S$

Multiple Choice

Evaluate the surface integral of G over the surface S.
- $S$ is the hemisphere $x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = 3 , z \geq 0 ; G ( x , y , z ) = z ^ { 2 }$

A) $6 \pi$
B) $4 \pi$
C) $36 \pi$
D) $3 \pi$