Perform the Indicated Elementary Row Operations A) $\left[\begin{array}{rrr}3 & -8 & -9 \\-7 & 5 & -6 \\1 & 9 & 0\end{array}\right]$

Perform the indicated elementary row operations.
- $\begin{array} { l } \mathrm { R } _ { 3 } + \mathrm { R } _ { 2 } \\{ \left[ \begin{array} { r r r } 3 & - 8 & - 9 \\- 7 & 5 & - 6 \\8 & 4 & 6\end{array} \right] }\end{array}$

A) $\left[\begin{array}{rrr}3 & -8 & -9 \\-7 & 5 & -6 \\1 & 9 & 0\end{array}\right]$

B) $\left[\begin{array}{rrr}3 & -8 & -9 \\8 & 4 & 6 \\-7 & 5 & -6\end{array}\right]$

C) $\left[\begin{array}{rrr}3 & -17 & -9 \\-7 & -1 & -6 \\8 & 12 & 6\end{array}\right]$

D) $\left[\begin{array}{rrr}3 & -8 & -9 \\1 & 9 & 0 \\8 & 4 & 6\end{array}\right]$