Solve the System by the Method of Substitution $$\left\{ \begin{array} { l } x - y ^ { 2 } = 0 \\x - y = 42\end{array} \right.$$

Multiple Choice

Solve the system by the method of substitution. $$\left\{ \begin{array} { l } x - y ^ { 2 } = 0 \\x - y = 42\end{array} \right.$$

A) $( 36,6 ) , ( 25 , - 5 )$
B) $( 36 , - 6 ) , ( 25,5 )$
C) $( 36,6 ) , ( 49 , - 7 )$
D) $( 36 , - 6 ) , ( 49,7 )$
E) no solution exists