Consider the building block called ‘Network N’ shown in the figure. Let C = 100 μF and R = 10 kΩ.Two such blocks are connected in cascade, as shown in the figure:The transfer function \(\rm \frac{{{V_3}\left( s \right)}}{{{V_1}\left( s \right)}}\) of the cascaded network is

• A. \(\rm \frac{s}{{s + 1}}\)
• B. \(\rm \frac{{{s^2}}}{{{s^2} + 3s + 1}}\)
• C. \(\rm {\left( {\frac{s}{{s + 1}}} \right)^2}\)
• D. \(\rm \frac{s}{{s + 2}}\)