Solve the Problem $$\left\{ \begin{array} { l } x + y = - 4 \\y = 3 x\end{array} \right.$$

Multiple Choice

Solve the problem.
- $$\left\{ \begin{array} { l } x + y = - 4 \\y = 3 x\end{array} \right.$$

A) $\{ ( 1,3 ) \}$
B) $\{ ( - 1,3 ) \}$
C) $\{ ( - 1 , - 3 ) \}$
D) $\{ ( 1 , - 3 ) \}$