Between 1950 and1973, France,Germany, and Japan all experienced growth rates that were at least two percentage points higher than those in the United States. Yet the most important technological advances of that period were made in the United States.

This can best be explained because the other countries__________.

A.had a lower standard of living.

B.imported the technology advancements from the United States.

C.exported more output than they imported.

D.none of the above.