Two identical two-port networks having transmission matrix \[\left[ {\begin{array}{*{20}{c}} {\text{A}}&{\text{B}} \\ {\text{C}}&{\text{D}} \end{array}} \right]\]  are cascaded. What will be the resultant transmission matrix of the cascade?

A. \[\left[ {\begin{array}{*{20}{c}} {\text{A}}&{\text{B}} \\ {\text{C}}&{\text{D}} \end{array}} \right]\]

B. \[\left[ {\begin{array}{*{20}{c}} {{\text{2A}}}&{{\text{2B}}} \\ {{\text{2C}}}&{{\text{2D}}} \end{array}} \right]\]

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

D. \[\left[ {\begin{array}{*{20}{c}} {{{\text{A}}^2}}&{{{\text{B}}^2}} \\ {{{\text{C}}^2}}&{{{\text{D}}^2}} \end{array}} \right]\]

Answer: Option C