The Eigenvalues of the Matrix $$A = \left( \begin{array} { c c c } 3 & 0 & 0 \\0 & 3 & 1 \\0 & - 1 & 1\end{array} \right)$$

Multiple Choice

The eigenvalues of the matrix $$A = \left( \begin{array} { c c c } 3 & 0 & 0 \\0 & 3 & 1 \\0 & - 1 & 1\end{array} \right)$$ are

A) 1, 2, 3
B) 2, 2, 3
C) 1, 2, 2
D) $- 2 , - 2,3$
E) $- 1 , - 2,3$