Find the drain current in the MOS devices for the following cases 1) (W/L)1 = (W/L)2, 2) (W/L)1 = 2(W/L)2, and 3) (W/L)1 = 4(W/L)2. What should be the values of R1 and R2 such that the devices remain in saturation region in all the three cases. Assume λ = 0.