$A$ and $B$ are both symmetric matrices but not skew-symmetric matrices

$A$ and $B$ are both skew-symmetric matrices but not symmetric matrices

$A$ and $B$ are neither symmetric nor skew-symmetric matrices

$A$ and $B$ are any two non-zero matrices

2

-3

5

-5

$\left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right]$

$\left[\begin{array}{ll}1 & 3 \\ 0 & 0\end{array}\right]$

$\left[\begin{array}{ll}1 & 3 \\ 0 & 1\end{array}\right]$

$\left[\begin{array}{ll}1 & 3 \\ 1 & 1\end{array}\right]$

$\frac{9-3 i}{10}$

$9-3 i$

$9+3 i$

$\frac{9+3 i}{10}$