RLC circuit 2

In the above diagram, a resistor with resistance \(R\), a capacitor with capacitance \(C,\) and two inductors with self-inductances \(L\) and \(2L,\) respectively, are connected to an AC power supply. The frequency of the AC power supply is \(\displaystyle \frac{1}{2\pi \sqrt{LC}}\). Which of the following statements is correct?

a) When the switch S is connected to A, the impedance of the circuit is \(R\).
b) When the switch S is connected to A, the voltages across the resistor and the capacitor have the same phase angle.
c) The RMS value of the current is smaller when the switch S is connected to B than when it is connected to A.

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