Write the Reciprocal (Or Multiplicative Inverse) of the Number If $- \frac { 4 } { 9 }$

Multiple Choice

Write the reciprocal (or multiplicative inverse) of the number if it exists.
- $- \frac { 4 } { 9 }$

A) $- \frac { 9 } { 4 }$
B) $\frac { 4 } { 9 }$
C) 1
D) $\frac { 9 } { 4 }$