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If $\triangle=\begin{vmatrix}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\\a_{31}&a_{32}&a_{33}\end{vmatrix}$ and $A_{ji}$ is cofactors of $a_{ji}$, then value of $\triangle$ is given by:

• 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
  $a_{21} A_{11}+a_{22} A_{12}+a_{23} A_{13}$
• ✓
  $a_{11} A_{11}+a_{21} A_{21}+a_{31} A_{31}$