Which of the following matrices is Hermitian but not real symmetric?
(1i−i2)\begin{pmatrix} 1 & i \\ -i & 2 \end{pmatrix}(1−ii2)
(1ii2)\begin{pmatrix} 1 & i \\ i & 2 \end{pmatrix}(1ii2)
(1223)\begin{pmatrix} 1 & 2 \\ 2 & 3 \end{pmatrix}(1223)
(i00i)\begin{pmatrix} i & 0 \\ 0 & i \end{pmatrix}(i00i)