Multiply or Divide as Indicated $- \frac { 4 } { 7 } \cdot \left( - \frac { 4 } { 9 } \right)$

Multiple Choice

Multiply or divide as indicated.
- $- \frac { 4 } { 7 } \cdot \left( - \frac { 4 } { 9 } \right)$

A) $\frac { 16 } { 63 }$
B) $- \frac { 16 } { 63 }$
C) $- \frac { 63 } { 16 }$
D) $\frac { 63 } { 16 }$