A resistor R=50Ω and an inductor L=0.20H are connected in series to the 230V, 50Hz mains. To ensure the rms current does not exceed 4.0A, what is the minimum capacitance that should be added in series (nearest whole μF)?
a) 70\,μF
b) 92\,μF
c) 55\,μF
d) 35\,μF