30. Consider the building block called ‘Network N’ shown in the figure.
Let C=100µF and R=10kΩ
Two such blocks are connected in cascade, as shown in the figure.
The transfer function \(v_3(s)\over v_1(s)\) of the cascaded network is
(A) \(s\over 1+s\)
(B) \(s^2\over 1+3s+s^2\)