In the United States,monopoly Regulation Began Primarily Because

Multiple Choice

In the United States,monopoly regulation began primarily because:

A) there were no natural monopolies in the real world.
B) monopolies were especially guilty of unsafe industrial practices.
C) monopolies did not typically follow occupational and safety rules.
D) monopolies tended to restrict output and raise prices.
E) most economists believed that the majority of industries were following the purely competitive model.