A combination of 1mF capacitor with an initial voltage vc

A combination of 1mF capacitor with an initial voltage v_c (0) = – 2V in series with a 100 Ω resistor is connected to a 20 mA ideal dc current source by operating both switches at t = 0s as shown. Which of the following graphs shown in the options approximates the voltage v_s across the current source over the next few second?

Under steady state condition,

When switch is opened :

By using Laplace transform approach.

V (S) =

100 +

-2

V_S(S) =	20 × 10³
	S²

⇒ V_S(S) =	2 × 10⁴
	S²

V_S(t) = 2 × 10⁴