In a parallel resonant circuit, the input impedance of the circuit is ________.

Correct option is D

$$\begin{array}{|c|c|c|}\hline\textbf{Item} & \textbf{Series RLC circuit} & \textbf{Parallel RLC circuit} \\\hline\text{Power factor at resonance} & \text{Unity} & \text{Unity} \\\hline\text{It magnifies} & \text{Voltage} & \text{Current} \\\hline\text{Input impedance at resonance} & \text{Minimum} & \text{Maximum} \\\hline\text{Resonant frequency} & \dfrac{1}{2\pi\sqrt{LC}} & \dfrac{1}{2\pi\sqrt{LC}} \\\hline\text{Current at resonant} & \text{Maximum} & \text{Minimum} \\\hline\text{Effective impedance} & R & \dfrac{L}{CR} \\\hline\end{array}$$​​