[单选题]
What is the power factor for a series RLC cfqmldi : 45m(-aqg b,ce xc 1ji/k.kp2ircuwgt cizk5 5ht/ fu4t+lyk4y g y99py-,it containing a 50-W resistor, a 10 gpyt/5,wyktky5-9ih+ uy94clf 4t zg-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz power supply?
