A capacitor of capacitance \(C\) is initially charged such that the electric potential difference between its plates is \(V_0\). At time \(t = 0\), an open switch is closed, connecting the capacitor directly in series with an ideal resistor of resistance \(R\) in a circuit containing no power source. Which of the following graphs best represents the magnitude of the potential difference across the resistor, \(V_R\), as a function of time \(t\) after the switch is closed?