Find the Solution to the System of Equations by Substitution $$\begin{array} { c } 7 x + y = 0 \\- 7 x + y = - 14\end{array}$$

Multiple Choice

Find the solution to the system of equations by substitution.
- $$\begin{array} { c } 7 x + y = 0 \\- 7 x + y = - 14\end{array}$$

A) (1, 14)
B) (-1, 7)
C) (1, -7)
D) (-1, -7)