An NMOS differential pair is biased by a current source I = 0.2 mA having an output resistance Rss = 100 K ohm. The amplifier has drain resistances Rd = 10 k ohm. using transistors with k'nW/L = 3 mA/V^2 and ro that is large. If the output is taken differentially and there is a 1% mismatch between the drain resistances,
find |Ad|, |Acm|, and CMRR.