In the circuit shown in the given figure, switch K is closed

In the circuit shown in the given figure, switch K is closed at t = 0. The circuit was initially relaxed. Which one of the following sources of v(t) will produce maximum current at t = 0⁺ ?

For unit step source,

I(t) =	V		1 - e^{(-R / L)t}
	R

At t = 0, I (t) = 0

For ramp, inputI (t) I(t) =	V		tU_t -		1 - e^{(-R / L)t}
	R

At t = 0, I(t) = 0

For impulse input, I(t) =	V	e^{(-R / L)t}
	R

Then at t = 0, I(t) =	V	Maximum
	R