Solve the System by the Addition Method $$\left\{ \begin{array} { l } 6 x + 3 y = 51 \\2 x - 6 y = 38\end{array} \right.$$

Multiple Choice

Solve the system by the addition method.
- $$\left\{ \begin{array} { l } 6 x + 3 y = 51 \\2 x - 6 y = 38\end{array} \right.$$

A) $\{ ( x , y ) \mid 2 x - 6 y = 38 \}$
B) $\{ ( - 3,10 ) \}$
C) $\{ ( 10 , - 3 ) \}$
D) $\varnothing$