In the circuit shown in the figure, an inductor $L$ and a resistor $R$ are connected in series with a battery of emf $E$ and a switch. The switch is closed at $t = 0$. Which graph shows the current against time?

Fig. 1: A circuit of a battery E, a switch S, an inductor L and a resistor R in series.

Graph (a)Graph (b)Graph (c)Graph (d)