Divide as Indicated, and Express Your Answer in Reduced Form $\frac { - 5 } { x } \div \frac { 9 } { x }$

Multiple Choice

Divide as indicated, and express your answer in reduced form. $\frac { - 5 } { x } \div \frac { 9 } { x }$

A) $- \frac { 9 } { 5 }$
B) $\frac { 9 x } { 5 x }$
C) $- 45$
D) $- \frac { 5 } { 9 }$
E) $\frac { 5 x } { 9 }$