Which of the Following Was a Trend Following World War

Which of the following was a trend following World War I that set the stage for World War II?

A) National states fell in number, while composite monarchies rose.
B) European countries grew far more reliant on the economy of Germany than on that of the United States.
C) The Austro-Hungarian Empire experienced a revival and threatened to surpass the German Empire.
D) The economic growth prompted by the war allowed most of Europe to flourish economically despite the Great Depression.
E) The feeling that there was little basis for the loss of human life during the war fueled resentment and extreme ideologies.