Solve the System of Equations Using Substitution $$\left\{ \begin{array} { l } x ^ { 2 } - y ^ { 2 } = 39 \\x - y = 3\end{array} \right.$$

Multiple Choice

Solve the system of equations using substitution.
- $$\left\{ \begin{array} { l } x ^ { 2 } - y ^ { 2 } = 39 \\x - y = 3\end{array} \right.$$

A) x = -8, y = 5
B) x = 8, y = -5
C) x = -8, y = -5
D) x = 8, y = 5