Solve the System by Elimination $$\begin{array} { l } x + 2 y = - 6 \\7 x + 3 y = - 42\end{array}$$

Multiple Choice

Solve the system by elimination.
- $$\begin{array} { l } x + 2 y = - 6 \\7 x + 3 y = - 42\end{array}$$

A) $\varnothing$
B) $\{ ( 6 , - 1 ) \}$
C) $\{ ( - 6,0 ) \}$
D) $\{ ( - 5 , - 6 ) \}$