The Increasing Internationalization of Economic Activity

The increasing internationalization of economic activity:

A) has had no effect on the competitive position of U.S. firms as compared to firms based in other countries.
B) is improving the competitive position of U.S. firms since the U.S. economy is laissez-faire and other economies are not.
C) may put U.S. firms at a competitive disadvantage if foreign firms face weaker enforcement of antitrust and regulatory rules.
D) none of the above.