For the matrix A=(123045006)A = \begin{pmatrix} 1 & 2 & 3 \\ 0 & 4 & 5 \\ 0 & 0 & 6 \end{pmatrix}A=100240356, what are the eigenvalues?
1,4,61, 4, 61,4,6
1,2,31, 2, 31,2,3
0,4,60, 4, 60,4,6
1,0,61, 0, 61,0,6