​Solve the System by the Method of Substitution $$\left\{ \begin{array} { l } \frac { 1 } { 10 } x + \frac { 3 } { 10 } y = 1 \\\\- \frac { 1 } { 5 } x + \frac { 2 } { 5 } y = 1\end{array} \right.$$

Multiple Choice

​Solve the system by the method of substitution. ​​ $$\left\{ \begin{array} { l } \frac { 1 } { 10 } x + \frac { 3 } { 10 } y = 1 \\\\- \frac { 1 } { 5 } x + \frac { 2 } { 5 } y = 1\end{array} \right.$$ ​

A) ​(-1,-3)
B) ​(-3,1)
C) ​(1,-3)
D) ​(3,1)
E) ​(1,3)