A two-part network has the ABCD parameters \(\left[ {\begin{array}{*{20}{c}} 7&8\\ 3&4 \end{array}} \right]\). Two such identical networks are cascaded. The ABCD parameters of the overall cascaded network will be

• A. \(\left[ {\begin{array}{*{20}{c}} 14&16\\ 6&8 \end{array}} \right]\)
• B. \(\left[ {\begin{array}{*{20}{c}} 73&88\\ 33&40 \end{array}} \right]\)
• C. \(\left[ {\begin{array}{*{20}{c}} 1&1\\ 1&1 \end{array}} \right]\)
• D. \(\left[ {\begin{array}{*{20}{c}} 49&64\\ 9&16 \end{array}} \right]\)