For each of the following characteristics, state whether it describes a perfectly competitive firm, a

monopolistically competitive firm, a monopoly, any of the two (specify), all, or none.

a) Sells a product differentiated from that of its competitors

b) Has marginal revenue less than price

c) Earns economic profit in the long run

d) Equates marginal revenue and marginal cost

e) Charges a price above marginal cost

f) Faces a downward-sloping demand curve

g) Produces the resource allocative efficient quantity of output