Solve the System by the Addition Method $$\left\{ \begin{array} { r } 8 x - 7 y = 6 \\- 32 x + 28 y = - 18\end{array} \right.$$

Multiple Choice

Solve the system by the addition method.
- $$\left\{ \begin{array} { r } 8 x - 7 y = 6 \\- 32 x + 28 y = - 18\end{array} \right.$$

A) $\left( 2 , - \frac { 7 } { 4 } \right)$
B) $( 4,3 )$
C) $\{ ( x , y ) \mid 8 x - 7 y = 6 \}$
D) $\varnothing$