An AC Series Circuit Contains a Resistor of 20

Multiple Choice

An AC series circuit contains a resistor of 20.0 Ω,an inductor of 74.0 mH and a variable capacitor.If the frequency of the applied voltage is 423 Hz,to what setting should the capacitor be set if resonance is achieved?

A) 1.89E-5 F
B) 7.66E-6 F
C) 5.09E-6 F
D) 1.91E-6 F
E) 1.91E-5 F