Two identical two-port networks having transmission matrix \(\left[ {\begin{array}{*{20}{c}} A&B\\ C&D \end{array}} \right]\)

• A. \(\left[ {\begin{array}{*{20}{c}} 2A&2B\\ 2C&2D \end{array}} \right]\)
• B. \(\left[ {\begin{array}{*{20}{c}} A&B\\ C&D \end{array}} \right]\)
• C. \(\left[ {\begin{array}{*{20}{c}} {{A^2} + BC}&{AB + BD}\\ {AC + CD}&{BC + {D^2}} \end{array}} \right]\)
• D. \(\left[ {\begin{array}{*{20}{c}} {{A^2}}&{{B^2}}\\ {{C^2}}&{{D^2}} \end{array}} \right]\)