The convergence hypothesis says that:
A.differences in real GDP per capita among countries tend to narrow over time.
B.differences in real GDP per capita among countries tend to increase over time.
C.differences in real GDP per capita do not have much affect on living standards in the long run.
D.aggregate production functions in different countries will all be the same in the long run.
E.differences in real GDP per capita among countries tend to remain constant over time.
