Solve the System of Equations by Either the Addition Method $\left\{ \begin{array} { l } \frac { x + 3 } { 4 } = \frac { y + 19 } { 8 } \\\frac { x } { 3 } = \frac { 2 y + 6 } { 6 }\end{array} \right.$

Multiple Choice

Solve the system of equations by either the addition method or the substitution method.
- $\left\{ \begin{array} { l } \frac { x + 3 } { 4 } = \frac { y + 19 } { 8 } \\\frac { x } { 3 } = \frac { 2 y + 6 } { 6 }\end{array} \right.$

A) infinite number of solutions
B) $( 10,7 )$
C) no solution
D) $( 7,10 )$