Empirical estimates indicate that the annual welfare cost of monopoly in the United
States
a. ranges from less than 1 percent to 5 percent of national income
b. ranges from 10 percent to 20 percent of national income
c. is approximately 10 percent of national income
d. is approximately $1 billion
e. is approximately $1 trillion
Under current guidelines, the U.S. Department of Justice usually challenges
a. all mergers
b. mergers in industries that would have a postmerger Herfindahl index greater than
1,800
c. mergers in industries that would have a postmerger Herfindahl index greater than
1,800 if the Herfindahl index increases by more than 100 points
d. mergers in industries that would have a postmerger Herfindahl index greater than
1,000
e. mergers in industries that would have a postmerger Herfindahl index greater than
1,000 if the Herfindahl index increases by more than 100 points