In the given circuit, $$S_{1}$$, switch remains closed and $$S_{2}$$ remains open for the long time .At $$t = 0, S_{1}$$ opens and $$S_{2}$$ closes and remain in this position for the long time. Find drain current for $$t < 0$$ and $$t >> 0$$ respectively if, $$\mu_n C_{ox} = 100 \mu A/V^2$$ and the Aspect ratio = 2

A

$$600 \mu A,0 \mu A$$

B

$$600 \mu A,25 \mu A$$

C

$$600 \mu A,-25 \mu A$$

D

$$0 \mu A,600 \mu A$$