Use the Given Row Transformation to Change the Matrix as Indicated

Multiple Choice

Use the given row transformation to change the matrix as indicated.
- $\left[ \begin{array} { r r r } 3 & 5 & 12 \\ 2 & 1 & 2 \\ 4 & - 1 & 4 \end{array} \right] ; - 2$ times row 2 added to row 3

A)
$\left[ \begin{array} { r r r } 3 & 5 & 12 \\ 2 & 1 & 2 \\ 8 & 1 & 8 \end{array} \right]$
B)
$\left[ \begin{array} { r r r } 3 & 5 & 12 \\ 2 & 1 & 2 \\ 0 & - 2 & 2 \end{array} \right]$
C)
$\left[ \begin{array} { r r r } 3 & 5 & 12 \\ 2 & 1 & 2 \\ 0 & - 3 & 0 \end{array} \right]$
D)
$\left[ \begin{array} { r r r } - 1 & 3 & 8 \\ 2 & 1 & 2 \\ 4 & - 1 & 4 \end{array} \right]$