In which market structures would we usually see economic profits at equilibrium?

a.only in monopoly

b.in monopoly and in monopolistic competition

c.in monopoly and strong or cooperating oligopolies

d.in monopoly and indifferentiated oligopoly

e. in all market structures

At equilibrium in an oligopoly, the size of economic profits will primarily depend on

a.the degree to which the oligopolists can collectively reduce barriers to entry

b.whether the oligopolists can reduce their MOS

c.the degree to which the oligopolists can cooperate rather than compete

d.the ability of the oligopolists to remain small and unnoticed

At equilibrium, in which market structures would we usually see P = AC?

a.pure oligopoly

b.differentiated oligopoly

c.monopoly

d.pure competition

e.declining industries