Many fear that cheap foreign labor will destroy American jobs; in reality, wages in

a. the United States have risen spectacularly in the last 33 years as trade grew.
b. countries that export to the United States are very low relative to the United States and show no sign of rising.
c. countries that export to the United States have risen spectacularly in the last 33 years.
d. United States export industries are very low relative to wages in the same industry in other countries.
e. All of the above are correct.

c