Divide as Indicated or State That the Division Is Undefined $$- \frac { 2 } { 3 } \div \left( - \frac { 7 } { 10 } \right)$$

Multiple Choice

Divide as indicated or state that the division is undefined.
- $$- \frac { 2 } { 3 } \div \left( - \frac { 7 } { 10 } \right)$$

A) $\frac { 20 } { 21 }$
B) $- \frac { 20 } { 21 }$
C) $- \frac { 7 } { 15 }$
D) $\frac { 21 } { 20 }$