Given A=(1234)A = \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}A=(1324), what is adj(A)\text{adj}(A)adj(A)?
(4−2−31)\begin{pmatrix} 4 & -2 \\ -3 & 1 \end{pmatrix}(4−3−21)
(4321)\begin{pmatrix} 4 & 3 \\ 2 & 1 \end{pmatrix}(4231)
(1324)\begin{pmatrix} 1 & 3 \\ 2 & 4 \end{pmatrix}(1234)
(−423−1)\begin{pmatrix} -4 & 2 \\ 3 & -1 \end{pmatrix}(−432−1)