Solve Each System by Using Either the Substitution or the Elimination-By-Addition

Multiple Choice

Solve each system by using either the substitution or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { c } y = 2 x + 32 \\y = - 6 x - 48\end{array} \right)$$

A) ( -12, 10)
B) ( -10, 12)
C) ( 10, 12)
D) infinitely many solutions
E) no solutions