What is the transpose of the matrix A=(123456)A = \begin{pmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \end{pmatrix}A=(142536)?
(142536)\begin{pmatrix} 1 & 4 \\ 2 & 5 \\ 3 & 6 \end{pmatrix}123456
(654321)\begin{pmatrix} 6 & 5 & 4 \\ 3 & 2 & 1 \end{pmatrix}(635241)
(123456)\begin{pmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \end{pmatrix}(142536)
(415263)\begin{pmatrix} 4 & 1 \\ 5 & 2 \\ 6 & 3 \end{pmatrix}456123