What is the eigenvalue of the matrix (123045006)\begin{pmatrix} 1 & 2 & 3 \\ 0 & 4 & 5 \\ 0 & 0 & 6 \end{pmatrix}100240356?
1,4,61, 4, 61,4,6
1,2,31, 2, 31,2,3
0,0,00, 0, 00,0,0
1,2,61, 2, 61,2,6