Choose the One Alternative That Best Completes the Statement or Answers

Choose the one alternative that best completes the statement or answers the question.
The polar coordinates of a point are given. Find the rectangular coordinates of the point.
- $$\left( - 5,120 ^ { \circ } \right)$$

A) $\left( - \frac { 5 } { 2 } , \frac { 5 \sqrt { 3 } } { 2 } \right)$
B) $\left( - \frac { 5 } { 2 } , \frac { - 5 \sqrt { 3 } } { 2 } \right)$
C) $\left( \frac { 5 } { 2 } , \frac { 5 \sqrt { 3 } } { 2 } \right)$
D) $\left( \frac { 5 } { 2 } , \frac { - 5 \sqrt { 3 } } { 2 } \right)$