What is the rank of the matrix product ABABAB where A=(1000)A = \begin{pmatrix} 1 & 0 \\ 0 & 0 \end{pmatrix}A=(1000) and B=(0100)B = \begin{pmatrix} 0 & 1 \\ 0 & 0 \end{pmatrix}B=(0010)?
0
1
2
Indeterminate