What Is the Multiplicative Inverse Of $- 6 z , z \neq 0$

Multiple Choice

What is the multiplicative inverse of $- 6 z , z \neq 0$ ?

A) $- \frac { 1 } { 6 }$
B) 6z
C) -6z
D) $- \frac { 1 } { 6 z }$
E) $\frac { 1 } { 6 z }$