Solve the System of Equations by the Addition Method $\left\{ \begin{array} { l } \frac { x } { 4 } + \frac { y } { 4 } = 0 \\\frac { x } { 4 } - \frac { y } { 4 } = - 1\end{array} \right.$

Multiple Choice

Solve the system of equations by the addition method.
- $\left\{ \begin{array} { l } \frac { x } { 4 } + \frac { y } { 4 } = 0 \\\frac { x } { 4 } - \frac { y } { 4 } = - 1\end{array} \right.$

A) no solution
B) infinite number of solutions
C) $( 2 , - 2 )$
D) $( - 2,2 )$