Solve the System of Equations by Substitution, If a Solution $$\left\{ \begin{array} { l } x + 9 y = 49 \\- 6 x + 8 y = 16\end{array} \right.$$

Multiple Choice

Solve the system of equations by substitution, if a solution exists.
- $$\left\{ \begin{array} { l } x + 9 y = 49 \\- 6 x + 8 y = 16\end{array} \right.$$

A) $x = 3 , y = 6$
B) $x = - 4 , y = 6$
C) No solution
D) $x = 4 , y = 5$