Fill in the Blank(s) Using Elementary Row Operations to Form $$\left[ \begin{array} { c c c } 6 & 9 & 4 \\5 & - 4 & 7\end{array} \right]$$

Multiple Choice

Fill in the blank(s) using elementary row operations to form a row-equivalent matrix.
$$\left[ \begin{array} { c c c } 6 & 9 & 4 \\5 & - 4 & 7\end{array} \right]$$ $$\left[ \begin{array} { c c c } 2 & \cdots & \frac { 4 } { 3 } \\5 & - 4 & 7\end{array} \right]$$

A) $\left[ \begin{array} { c c c } 2 & 9 & \frac { 4 } { 3 } \\5 & - 4 & 7\end{array} \right]$
B) $\left[ \begin{array} { c c c } 2 & 2 & \frac { 4 } { 3 } \\5 & - 4 & 7\end{array} \right]$
C) $\left[ \begin{array} { l l l } 2 & - 3 & \frac { 4 } { 3 } \\5 & - 4 & 7\end{array} \right]$
D) $\left[ \begin{array} { c c c } 2 & 5 & \frac { 4 } { 3 } \\5 & - 4 & 7\end{array} \right]$
E) $\left[ \begin{array} { c c c } 2 & 3 & \frac { 4 } { 3 } \\5 & - 4 & 7\end{array} \right]$