Why Did the Unemployment Rate Decline During the Recession of 2008-09

Why did the unemployment rate decline during the recession of 2008-09 in Germany?

A) Because out of the 19 OECD countries, all but Germany had low unemployment rate prior to the recession.
B) Because the unemployment rate of all OECD countries had declined during this period.
C) Because out of the 19 OECD countries, only Germany had short-time work schedule programs.
D) Because of the presence of large and effective short-time work schedule programs in Germany.
E) None of choices are correct.