The variation of current versus time is \[\] The potential difference across a 2H inductor as function of time is shown in figure. At time $t=0$, current is zero.

Question

 

$\begin {array} {1 1} (a)\;\text{ Straight line} & \quad (b)\;\text{ Parabola} \\ (c)\;\text{Hyperbola} & \quad (d)\;\text{Exponential} \end {array}$