Which of the Following Is NOT One of the Major

Which of the following is NOT one of the major problems with expanding the EU?

A) Expansion has become a more difficult task because of the unwillingness of the eastern and central European countries to change.
B) The programs that target EU expenditures could be stretched thin by the addition of countries with much lower incomes.
C) The EU may be faced with an unstable eastern border with huge worker migratory flows if the transition economies fail.
D) Most central and eastern European countries have large agricultural sectors and extending subsidies to these countries would entail an enormous flow of funds given the Common Agricultural Policy.