Form the Coefficient Matrix for the System of Linear Equations $\left\{ \begin{array} { r } 6 x + 3 y + 7 z = 0 \\x + 6 y + z = 7 \\8 x + 9 y + 7 z = - 9\end{array} \right.$

Form the coefficient matrix for the system of linear equations below.
$\left\{ \begin{array} { r } 6 x + 3 y + 7 z = 0 \\x + 6 y + z = 7 \\8 x + 9 y + 7 z = - 9\end{array} \right.$

A) $\left[ \begin{array} { c c c c } 6 & 3 & 7 & 0 \\1 & 6 & 1 & 7 \\8 & 9 & 7 & - 9\end{array} \right]$
B) $\left[ \begin{array} { l l l } 6 & 3 & 7 \\1 & 6 & 1 \\8 & 9 & 7\end{array} \right]$
C) $\left[ \begin{array} { c c c } 6 & 1 & 8 \\3 & 6 & 9 \\7 & 1 & 7 \\0 & 7 & - 9\end{array} \right]$
D) $\left[ \begin{array} { l l l } 6 & 1 & 8 \\3 & 6 & 9 \\7 & 1 & 7\end{array} \right]$
E) $\left[ \begin{array} { c } 0 \\7 \\- 9\end{array} \right]$