Solve the System of Equations by the Addition Method $\left\{ \begin{array} { l } 3 x - 5 y = - 10 \\5 x - 4 y = - 21\end{array} \right.$

Multiple Choice

Solve the system of equations by the addition method.
- $\left\{ \begin{array} { l } 3 x - 5 y = - 10 \\5 x - 4 y = - 21\end{array} \right.$

A) (-5, -1)
B) (5, -1)
C) (-5, 1)
D) (5, 1)