As Shown in the Figure, an Ac Source Whose Rms

As shown in the figure, an ac source whose rms voltage is 80 V is in series with a 100-Ω resistor and a capacitor whose reactance is 200 Ω at the frequency of the source. What is the rms voltage across the capacitor?

A) 66 V
B) 68 V
C) 70 V
D) 72 V
E) 74 V