Several Reasons Have Been Advanced to Explain Why Wages Paid

Several reasons have been advanced to explain why wages paid in the United States are so high relative to the rest of the world.Which of the following is an accurate explanation?

A) U.S.workers are better educated.
B) U.S.workers have a larger stock of capital per worker.
C) U.S.workers use more modern technology.
D) All of the above.
E) None of the above.