(CLO 1) Given the circuit below with NMOS transistor parameters: kn = 2 mA/V2, Vt = 2 V and VDD = 10 V. (a) (5%) Answer in what mode of operation is this transistor working and explain why. (b) (15%) If ID = 0.5 mA, find: VOV, VO, and RS. (c) (10%) Find the RS value needed to get VO = 5 V. (d) (5%) What biasing or RS resistance value do you need to use in order to reach cutoff mode of operation?