Find the Cofactor, A23, of the Matrix $A = \left[ \begin{array} { r r r } 5 & - 2 & 7 \\6 & 1 & - 9 \\4 & - 3 & 8\end{array} \right]$

Multiple Choice

Find the cofactor, A23, of the matrix $A = \left[ \begin{array} { r r r } 5 & - 2 & 7 \\6 & 1 & - 9 \\4 & - 3 & 8\end{array} \right]$

A) 23
B) -23
C) 0
D) -7
E) 7