Solve the System by Substitution $$\begin{array} { l } 4 x - 10 y = 5 \\4 x + 10 y = 5\end{array}$$

Multiple Choice

Solve the system by substitution.
- $$\begin{array} { l } 4 x - 10 y = 5 \\4 x + 10 y = 5\end{array}$$

A) $\left\{ \left( \frac { 5 } { 4 } , 0 \right) \right\}$
B) $\left\{ \left( 0 , \frac { 4 } { 5 } \right) \right\}$
C) $\varnothing$
D) $\left\{ \left( \frac { 5 } { 4 } , 1 \right) \right\}$