Solve the System of Equations by Substitution, If a Solution $$\left\{ \begin{array} { l } x + y = - 3 \\x + y = 1\end{array} \right.$$

Multiple Choice

Solve the system of equations by substitution, if a solution exists.
- $$\left\{ \begin{array} { l } x + y = - 3 \\x + y = 1\end{array} \right.$$

A) $x = - 3 , y = 1$
B) $x = 0 , y = - 2$
C) $x = 1 , y = - 3$
D) No solution