Which of the following is the inverse of A=(1101)A = \begin{pmatrix} 1 & 1 \\ 0 & 1 \end{pmatrix}A=(1011)?
(1−101)\begin{pmatrix} 1 & -1 \\ 0 & 1 \end{pmatrix}(10−11)
(−110−1)\begin{pmatrix} -1 & 1 \\ 0 & -1 \end{pmatrix}(−101−1)
(1101)\begin{pmatrix} 1 & 1 \\ 0 & 1 \end{pmatrix}(1011)
(0110)\begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix}(0110)