Consider the Following Characteristics

Multiple Choice

Consider the following characteristics:
a) a market structure with barriers to entry
b) demand curves that are easily identified
c) firm cannot make zero profits in the long run
d) firm can reap long run profits
Which of the characteristics in the list above is shared by an oligopolist and a monopolist?

A) a, b and d
B) a, c, and d
C) a and d
D) a, b, c and d