Consider the matrix \(G\) where
\begin{align*}
G=\begin{bmatrix}
0 & 1 & 0 \\
1 & 0 & 1 \\
0 & 0 & 0
\end{bmatrix}
\end{align*}
Which one of the following correctly describes matrix \(G\)?
- a binary matrix
- a permutation matrix
- an identity matrix
- a diagonal matrix