Solve the Equation by Completing the Square $$9 x ^ { 2 } + 36 x + 20 = 0$$

Multiple Choice

Solve the equation by completing the square.
- $$9 x ^ { 2 } + 36 x + 20 = 0$$

A) $\left\{ \frac { 2 } { 3 } , \frac { 10 } { 3 } \right\}$
B) $\left\{ - \frac { 10 } { 3 } , \frac { 10 } { 3 } \right\}$
C) $\left\{ - \frac { 2 } { 3 } , - \frac { 10 } { 3 } \right\}$
D) $\left\{ - \frac { 2 } { 9 } , - \frac { 10 } { 9 } \right\}$