Empirical Estimates of the Annual Deadweight Loss of Monopoly in the United

Empirical estimates of the annual deadweight loss of monopoly in the United States have _____

A) ranged from about 1 percent to about 5 percent of national income.
B) ranged from about 6 percent to about 7 percent of national income.
C) been about 8 percent of national income.
D) been about 9 percent of national income.
E) been about 10 percent of national income.