For the last five years the Dutch economy has grown faster than Britain, France, or Germany, with the unemployment rate having remained well below that of the other three countries.
A. Britain, France, or Germany, with the unemployment rate having remained
B. have those of Britain, France, or Germany, and the unemployment rate remaining
C. have Britain, France, and Germany, and the unemployment rate has remained
D. the economy of Britain, France, and Germany, with the unemployment rate that has remained
E. the economies of Britain, France, and Germany, and the unemployment rate has remained
OA is E.
Someone told me that "the economy of Britain, France, and Germany" is wrong because each of those 3 countries has its own economy, so it has to be "the economies of Britain, France, and Germany". Is such interpretation correct?
If yes, shouldn't "the unemployment rate has remained well below that of the other three countries" become "the unemployment rate has remained well below the unemployment rates of the other three countries" because those 3 countries have different rates?
I understand that it is an non-underlined portion. I just want to learn more from non-underlined portion.
Do you guys think that ETS didn't write this non-underlined portion correctly? Or is it a special usage that I am not aware of?
Thanks in advance.