Solve the System by the Addition Method $$\begin{array} { r } 5 x + 2 y = - - 1 \\- 5 x - 5 y = 5\end{array}$$

Multiple Choice

Solve the system by the addition method.
- $$\begin{array} { r } 5 x + 2 y = - - 1 \\- 5 x - 5 y = 5\end{array}$$

A) $\{ ( 1 , - 2 ) \}$
B) $\{ ( - 1,2 ) \}$
C) $\{ ( - 1 , - 2 ) \}$
D) $\varnothing$