There Are Five Firms in an Industry

Multiple Choice

There are five firms in an industry.You know sales of the four largest firms are $1,000,000,$500,000,$400,000,and $178,000.If the C₄ ratio is 95 percent,then the HHI is:

A) 1,810.
B) 2,755.
C) 3,038.
D) 5,017.