Solve the System by the Method of Substitution $\left\{ \begin{array} { l } 1.3 x + 0.6 y = 5.7 \\0.9 x - 0.2 y = 2.1\end{array} \right.$

Multiple Choice

Solve the system by the method of substitution. $\left\{ \begin{array} { l } 1.3 x + 0.6 y = 5.7 \\0.9 x - 0.2 y = 2.1\end{array} \right.$

A) (-3, 3)
B) (3, 3)
C) (-3, -3)
D) (-5, -5)
E) (5, 5)