Which of the Following Is Consistent with the Catch-Up Effect

Multiple Choice

Which of the following is consistent with the catch-up effect?

A) The United States had a higher growth rate before 1900 than after.
B) After World War II the United States had lower growth rates than war-ravaged European countries.
C) Although the United States has a relatively high level of output per person,its growth rate is rather modest compared to some countries.
D) All of the above are correct.