For the lattice circuit shown in the figure, $Z_{a}=j 2 \Omega$ and $Z_{b}=2 \Omega$. The values of the open circuit impedance parameters $Z=\left[\begin{array}{ll}z_{11} & z_{12} \\ z_{21} & z_{22}\end{array}\right]$ are
- $\left[\begin{array}{ll}1-j & 1+j \\ 1+j & 1+j\end{array}\right]$
- $\left[\begin{array}{cc}1-j & 1+j \\ -1+j & 1-j\end{array}\right]$
- $\left[\begin{array}{ll}1+j & 1+j \\ 1-j & 1-j\end{array}\right]$
- $\left[\begin{array}{cc}1+j & -1+j \\ -1-j & 1-j\end{array}\right]$