Simplify the Expression and Write the Answer Without Negative Exponents $- 4 z ^ { - 2 }$

Multiple Choice

Simplify the expression and write the answer without negative exponents.
- $- 4 z ^ { - 2 }$

A) $- \frac { 4 } { z ^ { 2 } }$
B) $\frac { 16 } { z ^ { 2 } }$
C) $\frac { 1 } { 16 z ^ { 2 } }$
D) $- \frac { 1 } { 16 z ^ { 2 } }$