Solve the System by the Method of Substitution $$\left\{ \begin{aligned}36 x ^ { 2 } + 4 y ^ { 2 } & = 144 \\6 x + 2 y & = 12\end{aligned} \right.$$

Multiple Choice

Solve the system by the method of substitution. $$\left\{ \begin{aligned}36 x ^ { 2 } + 4 y ^ { 2 } & = 144 \\6 x + 2 y & = 12\end{aligned} \right.$$

A) $( 6,0 ) , ( 0,2 )$
B) $( 6,2 )$
C) $( 2,0 ) , ( 0,6 )$
D) $( 0,0 )$
E) no solution exists