Solve the Equation by Completing the Square $$8 x ^ { 2 } + 7 x = - 2$$

Multiple Choice

Solve the equation by completing the square.
- $$8 x ^ { 2 } + 7 x = - 2$$

A) $\left\{ \frac { 7 } { 16 } \pm \frac { \sqrt { 15 } } { 16 } \mathrm { i } \right\}$
B) $\left\{ \frac { - 7 \pm \sqrt { 15 } } { 16 } \right\}$
C) $\left\{ \frac { 7 \pm \sqrt { 15 } } { 16 } \right\}$
D) $\left\{ - \frac { 7 } { 16 } \pm \frac { \sqrt { 15 } } { 16 } \mathrm { i } \right\}$