In circuit below, a 0.18 μm technology NMOS is used for which tox = 4 nm, μn = 450 cm2/V⋅s, VTn = 0.7 V and W/L = 20 : a. Identify the source, drain, gate, and bulk terminals . b. find Cox, kn. c. Determine the transistor mode of operation and the current ID in the transistor . d. If the voltage source 0.2 V was increased such that the transistor is operating in saturation . what would be the Minimum value of the voltage source ? Determine the value of the current for this case?