For the NMOS common-source amplifier in Figure P4.15, the transistor parameters are:VTN = 0.8 V, Kn = 1 mA/V2, and A = 0. The circuit parameters are VDD =5V, RS =lk 0, RD= 4kN, R1= 225 kN, and R2=175 kn. (a) Calculate the quiescent values IDQ and VDSQ(b) Determine the small-signal voltage gain for RL = 0. (c) Determine the value of RL that will reduce the small-signal voltage gain to 75 percent of the value found in part (b). VDD Rp R1 Cc2 Rin RL Figure P4.15