Perform the Indicated Elementary Row Operations A) $\left[\begin{array}{rr}-64 & -4 \\-8 & -1\end{array}\right]$

Multiple Choice

Perform the indicated elementary row operations.
- $\begin{array} { l } (9) \mathrm { R } _ { 1 } + \mathrm { R } _ { 2 } \\{ \left[ \begin{array} { r r } 8 & 5 \\- 8 & - 1\end{array} \right] }\end{array}$

A) $\left[\begin{array}{rr}-64 & -4 \\-8 & -1\end{array}\right]$

B) $\left[\begin{array}{rr}8 & 5 \\64 & 44\end{array}\right]$

C) $\left[\begin{array}{rr}72 & 45 \\-8 & -1\end{array}\right]$

D) $\left[\begin{array}{rr}8 & 77 \\-8 & -73\end{array}\right]$