What is the cofactor C12C_{12}C12 of the matrix A=(123045106)A = \begin{pmatrix} 1 & 2 & 3 \\ 0 & 4 & 5 \\ 1 & 0 & 6 \end{pmatrix}A=101240356?
555
111
−5-5−5
−1-1−1