In a Series LRC Circuit, the Frequency at Which the Circuit

Multiple Choice

In a series LRC circuit, the frequency at which the circuit is at resonance is f0. If you double the resistance, the inductance, the capacitance, and the voltage amplitude of the ac source, what is the new resonance frequency?

A) 4 f0
B) 2 f0
C) f0
D) f0/2
E) f0/4