Answer
The matrix is in the row echelon form and it is also in the reduced echelon form.
Work Step by Step
The matrix $$
\left[\begin{array}{llll}{0} & {1} & {0} & {0} \\ {0} & {0} & {1} & {2} \\ {0} & {0} & {0} & {0}\end{array}\right]
$$
is in the row echelon form and it is also in the reduced echelon form.
