The inverter below operates with VDD = 0.4 V and is composed of |Vt| = 0.6 V devices. The devices have identical I0 and n. Assume n = 1.5. a. Calculate the switching threshold (VM) of this inverter. b. Calculate VIL and VIH of the inverter. c. Calculate noise margin (NML and NMH) of this inverter. Figure 2 - Inverter in Weak Inversion Regime