In an RC circuit, how is the instantaneous current through the capacitor related to the instantaneous voltage across the capacitor?
A) The instantaneous current through the capacitor is directly proportional to the instantaneous voltage across the capacitor.
B) The instantaneous current through the capacitor is independent of the instantaneous voltage across the capacitor.
C) The instantaneous current through the capacitor is inversely proportional to the instantaneous voltage across the capacitor.
D) The instantaneous current through the capacitor is proportional to the rate of change of the instantaneous voltage across the capacitor.