What Prevented European Governments from Addressing the Great Recession with Keynesian

What prevented European governments from addressing the Great Recession with Keynesian policies?

A) an obsessive focus on immigration policies as the cause of the recession
B) the EU requirement that budget deficits constitute less than 3 percent of GDP
C) the right-wing opposition to government interference in economy
D) chaos caused by an increasing number of terrorist attacks
E) a currency crisis that followed collapse of several major international banks