The connection of two 2-port networks is shown in the figure. The $\text{ABCD}$ parameters of $N1$ and $N2$ networks are given as $$\begin{bmatrix}A &B\\C &D\end{bmatrix}_{N1}=\begin{bmatrix}1 &5\\0 &1\end{bmatrix}and \begin{bmatrix}A &B\\C &D\end{bmatrix}_{N2}=\begin{bmatrix}1 &0\\0.2 &1\end{bmatrix}$$
- $\begin{bmatrix}2 &5\\0.2 &1\end{bmatrix}$
- $\begin{bmatrix}1 &2\\0.5 &1\end{bmatrix}$
- $\begin{bmatrix}5 &2\\0.5 &1\end{bmatrix}$
- $\begin{bmatrix}1 &2\\0.5 &5\end{bmatrix}$