Let $A=\left[\begin{array}{ccc}0 & 0 & -1 \\ 0 & -1 & 0 \\ -1 & 0 & 0\end{array}\right], B=\left[\begin{array}{lll}0 & 1 & 0 \\ 1 & 0 & 0 \\ 0 & 0 & 1\end{array}\right]$, then $\left(A^{-1} B\right)^{-1}+\left(A B^{-1}\right)^{-1}=$
- A
$\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & -2 & 0 \\ 0 & 0 & 2\end{array}\right]$
- B
$\left[\begin{array}{ccc}0 & -2 & 0 \\ 0 & 0 & -2 \\ -2 & 0 & 0\end{array}\right]$
- C
$\left[\begin{array}{ccc}-2 & 0 & 0 \\ 0 & 0 & -2 \\ 0 & -2 & 0\end{array}\right]$
- D
$\left[\begin{array}{ccc}0 & 0 & -2 \\ -2 & 0 & 0 \\ 0 & -2 & 0\end{array}\right]$
✓ Correct answer: B
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