Which Matrix Shown Below Indicates That the Equations of Its $\text { a. } \left[ \begin{array} { c c | c } 1 & 5 & - 7 \\0 & 0 & 0\end{array} \right]$

Short Answer

Which matrix shown below indicates that the equations of its associated system are dependent?
$\text { a. } \left[ \begin{array} { c c | c } 1 & 5 & - 7 \\0 & 0 & 0\end{array} \right]$ $\text { b. } \left[ \begin{array} { r r | r } 1 & 5 & - 7 \\0 & 4 & 0\end{array} \right]$ $\text { c. } \left[ \begin{array} { l l | r } 1 & 5 & - 7 \\0 & 0 & 5\end{array} \right]$ Enter a, b or c . __________