What Is One Difference Between the Financial Crisis Situations Faced

What is one difference between the financial crisis situations faced in 2010 by the European Central Bank and the U.S. Federal Reserve within their respective economies?

A) Most European countries had government budget deficits, while the United States did not.
B) Unemployment was a large concern in the United States but it was not a concern in the European Union.
C) The EU was still trying to gain stability and credibility for its currency, the Euro, which was then a relatively new currency, whereas the U.S. dollar had a long history of relative stability.
D) The U.S. was dealing with a currency (the U.S. dollar) that was fluctuating widely in value as the crisis began, while the European Union had a very stable currency (the Euro) that was used throughout the EU.