Solve the System by the Addition Method $$\left\{ \begin{array} { l } 5 x - 2 y = - 1 \\7 x + 4 y = 53\end{array} \right.$$

Multiple Choice

Solve the system by the addition method.
- $$\left\{ \begin{array} { l } 5 x - 2 y = - 1 \\7 x + 4 y = 53\end{array} \right.$$

A) $\varnothing$
B) $\{ ( 3,8 ) \}$
C) $\{ ( 3,9 ) \}$
D) $\{ ( x , y ) \mid 5 x - 2 y = - 1 \}$