A circuit consists of an ideal battery of emf \(\mathcal{E}\), an open switch \(S\), an ideal inductor of inductance \(L\), and a resistor of resistance \(R\) connected in series. At time \(t = 0\), the switch \(S\) is closed. Which of the following graphs best represents the magnitude of the potential difference across the inductor, \(\Delta V_L\), as a function of time \(t\) for \(t \ge 0\)?