Countries that have lower levels of real GDP per person than the United States

A、tend to have growth rates that are higher than that of the United States.;
B、tend to have growth rates that are about the same as that of the United States.;
C、tend to have growth rates that are lower than that of the United States.;
D、in some cases have growth rates that are higher than that of the United States and in other cases lower than that of the United States.