Simplify Assume That Variables in the Exponent Represent Nonzero Integers $\frac { z ^ { 9 x + 2 \cdot z ^ { 3 x } } } { z ^ { x } }$

Multiple Choice

Simplify. Assume that variables in the exponent represent nonzero integers and that all other variables are not 0.
- $\frac { z ^ { 9 x + 2 \cdot z ^ { 3 x } } } { z ^ { x } }$

A) $z ^ { 6 x + 2 }$
B) $z ^ { 8 x }$
C) $z ^ { 11 x + 2 }$
D) $z ^ { 14 x }$