Use the Given Row Transformation to Change the Matrix as Indicated

Multiple Choice

Use the given row transformation to change the matrix as indicated.
- $\left[ \begin{array} { r r } - 1 & 4 \\ 7 & 0 \end{array} \right] ; 7$ times row 1 added to row 2

A)
$\left[ \begin{array} { r r } - 1 & 4 \\ 0 & 28 \end{array} \right]$
B)

$\left[ \begin{array} { r r } - 1 & - 3 \\ 0 & 28 \end{array} \right]$
C)
$\left[ \begin{array} { r r } - 7 & 28 \\ 7 & 0 \end{array} \right]$
D)
$\left[ \begin{array} { r r } - 1 & 4 \\ 7 & 28 \end{array} \right]$