1.Which of the following matrices can NOT be obtained from the matrix (−121−1)\begin{pmatrix} -1 & 2 \\ 1 & -1 \end{pmatrix}(−112−1) by a single elementary row operation?a.(011−1)\begin{pmatrix} 0 & 1 \\ 1 & -1 \end{pmatrix}(011−1)b.(1−1−12)\begin{pmatrix} 1 & -1 \\ -1 & 2 \end{pmatrix}(1−1−12)c.(−12−27)\begin{pmatrix} -1 & 2 \\ -2 & 7 \end{pmatrix}(−1−227)d.(−12−13)\begin{pmatrix} -1 & 2 \\ -1 & 3 \end{pmatrix}(−1−123)Login to continueOnly logged in users canattempt or see the solution.
