Perform the Row Operations on the Matrix and Write the Resulting

Multiple Choice

Perform the row operations on the matrix and write the resulting matrix.
-Replace $R_{3}$ by $\frac{1}{2} R_{1}+R_{2}$
$\left[\begin{array}{rrr|r}2 & 2 & 4 & 6 \\ 1 & -1 & -2 & 5 \\ 0 & 1 & 0 & 1\end{array}\right]$

A) $\left[\begin{array}{rrr|r}2 & 2 & 4 & 6 \\1 & -1 & -2 & 5 \\2 & 0 & 0 & 8\end{array}\right]$
B) $\left[\begin{array}{lll|r}1 & 1 & 2 & 3 \\ 2 & 0 & 0 & 8 \\ 0 & 1 & 0 & 1\end{array}\right]$
C) $\left[\begin{array}{lll|r}2 & 2 & 4 & 6 \\ 0 & 1 & 0 & 1 \\ 3 & 1 & 2 & 11\end{array}\right]$
D) $\left[\begin{array}{lll|l}1 & 1 & 2 & 3 \\ 0 & 1 & 0 & 0 \\ 2 & 0 & 0 & 8\end{array}\right]$