With explain

Suppose that you are given wh, w, and 0 in the signaling model in the chapter. For what values of c are both a pooling equilibrium and a separating equilibrium possible? For what value of c are both types of equilibria possible and do high-ability workers have higher net earnings in a separating equilibrium than in a pooling equilibrium? The values of c for which both a pooling equilibrium and a separating equilibrium are possible are values such that