8. A series RC circuit is connected across an ideal DC voltage source through an open switch. The switch is closed at time t = 0 sec. Which of the following statements regarding the circuit is correct?
(A) The potential differences across the resistor and the capacitor are always equal.
(B) The potential difference across the resistor is always greater than that across the capacitor.
(C) The potential difference across the capacitor is always greater than that across the resistor.
(D) Once the capacitor is essentially fully charged, the potential difference across the capacitor becomes zero.
(E) Once the capacitor is essentially fully charged, the potential difference across the resistor becomes zero.