A series LCR circuit is built with a variable resistor. The resonant frequency of the circuit is $\omega_0$. The circuit response ( $I_m-R$ profile, where, $I_m$ is peak current and $R$ is resistance) is recorded for three different values of frequencies $(\omega)$ of input signal, and these are depicted schematically in the accompanying figures, I, II and III. The figures respectively correspond to

• Correct answer
  A

  $\omega=\omega_0, \omega \approx \omega_0$ and $\omega \gg \omega_0$
• B

  $\omega \approx \omega_0, \omega=\omega_0$ and $\omega \gg \omega_0$.
• C

  $\omega \approx \omega_0, \omega=\omega_0$ and $\omega \ll \omega_0$
• D

  $\omega=\omega_0, \omega \ll \omega_0$ and $\omega \gg \omega_0$

Hence, the correct answer is option: 'A'.