Perform the Operations as Indicated, and Express Your Answer in Lowest

Multiple Choice

Perform the operations as indicated, and express your answer in lowest terms. $\left( - \frac { 8 } { 9 } \right) \div \left( \frac { 7 } { 9 } \right) \left( - \frac { 21 } { 8 } \right)$

A) $- 3$
B) $3$
C) $\frac { 1 } { 3 }$
D) $- \frac { 1 } { 3 }$
E) $\frac { 4 } { 5 }$