Which one of the matrices below belongs to a transmission matrix of a real transmission line?

1) \(\left[\begin{array}{cc}j & 1 \\ 0 & -j\end{array}ight]\)

2) \(\left[\begin{array}{ll}1 & j \\ 2 & 1\end{array}ight]\)

3) \(\left[\begin{array}{ll}1 & 2 \\ 3 & 1\end{array}ight]\)

4) \(\left[\begin{array}{ll}1 & j \\ 0 & 1\end{array}ight]\)