The four-firm concentration ratio for household appliance makers is 17 and for petrochemicals it is 65.
The HHI for household appliance makers is 107 and for petrochemicals it is 2,535.
Which of these markets is an example of monopolistic competition?
The household appliance market ◻ an example of monopolistic competition. The petrochemical market ◻ an example of monopolistic competition.
A. is not; is
B. is not; is not
C. is; is
D. is; is not