Simplify the Expression and Write the Answer Without Negative Exponents $2 z ^ { - 3 }$

Multiple Choice

Simplify the expression and write the answer without negative exponents.
- $2 z ^ { - 3 }$

A) $- \frac { 1 } { 8 z ^ { 3 } }$
B) $\frac { 2 } { z ^ { 3 } }$
C) $\frac { 1 } { 8 \mathrm { z } ^ { 3 } }$
D) $- \frac { 8 } { z ^ { 3 } }$