下列矩阵中, 不能相似于对角矩阵的是
$\text{A.}$ $\boldsymbol{A}=\left[\begin{array}{lll}0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0\end{array}\right]$
$\text{B.}$ $\boldsymbol{B}=\left[\begin{array}{lll}1 & 1 & 1 \\ 0 & 2 & 2 \\ 0 & 0 & 3\end{array}\right]$
$\text{C.}$ $\boldsymbol{C}=\left[\begin{array}{lll}1 & -2 & 1 \\ 2 & -4 & 2 \\ 1 & -2 & 1\end{array}\right]$
$\text{D.}$ $\boldsymbol{D}=\left[\begin{array}{ccc}2 & -1 & 2 \\ 5 & -3 & 3 \\ -1 & 0 & -2\end{array}\right]$