a) What is the voltage gain of the common-source amplifier shown below? Assume Kn = 0.45 mA/V2, VTN = 1 V, and λ = 0.0133 V−1. b) What is the maximum value of vi that satisfies the small-signal assumptions? c) Compare the voltage gain to the common-source "rule-of-thumb" gain estimate and the "intrinsic gain" of the transistor.