Solve the System by the Substitution Method $$\left\{ \begin{array} { l } 3 x + y = 11 \\9 x + 3 y = 33\end{array} \right.$$

Multiple Choice

Solve the system by the substitution method.
- $$\left\{ \begin{array} { l } 3 x + y = 11 \\9 x + 3 y = 33\end{array} \right.$$

A) $\{ ( 0,11 ) \}$
B) $\{ ( x , y ) \mid 3 x + y = 11 \}$
C) $\varnothing$
D) $\{ ( 5 , - 4 ) \}$