Solve the Equation by Completing the Square $$49 x ^ { 2 } + 98 x + 13 = 0$$

Multiple Choice

Solve the equation by completing the square.
- $$49 x ^ { 2 } + 98 x + 13 = 0$$

A) $\left\{ \frac { 1 } { 7 } , \frac { 13 } { 7 } \right\}$
B) $\left\{ - \frac { 1 } { 49 } , - \frac { 13 } { 49 } \right\}$
C) $\left\{ - \frac { 13 } { 49 } , \frac { 26 } { 49 } \right\}$
D) $\left\{ - \frac { 1 } { 7 } , - \frac { 13 } { 7 } \right\}$