section*{Choose the correct answer :} Question ID: 481221 If $Delta=left|begin{array}{lll}a_{11} & a_{12} & a_{13} \ a_{21} & a_{22} & a_{23} \ a_{31} & a_{32} & a_{33}end{array}right|$ and $A_{i j}$ is co-factor of $a_{i j}$, then value of $Delta$ is equal to (A) $a_{11} A_{31}+a_{12} A_{32}+a_{13} A_{33}$ (B) $a_{11} A_{11}+a_{12} A_{21}+a_{13} A_{31}$ (C) $a_{21} A_{11}+a_{22} A_{12}+a_{23} […]