The above left is an RLC series circuit, where the resistance of the resistor, the self-inductance of the inductor and the capacitance of the capacitor are \(R\), \(L\) and \(C\), respectively. The above right shows the current intensity as a function of the frequency of the AC power supply, where \(f_0\) is the resonance frequency of this circuit. Which of the following methods can make the resonance frequency greater than \(f_0\)?

a) Replacing the inductor with one that has an inductance greater than \(L.\)

b) Replacing the capacitor with one that has a conductance greater than \(C.\)

c) Connecting more capacitors with capacitance \(C\) in series to the existing capacitor.

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