The [y] parameter of a two port network is given by

[answerhappygod]

a) \(\begin{bmatrix}
6 & 4\\
2 & 3
\end{bmatrix}\)S
b) \(\begin{bmatrix}
6 & 2\\
0 & 3
\end{bmatrix}\)S
c) \(\begin{bmatrix}
5 & 4\\
2 & 2
\end{bmatrix}\)S
d) \(\begin{bmatrix}
4 & 4\\
2 & 1
\end{bmatrix}\)S