What Brought About the End of the Jazz Age

What brought about the end of the Jazz Age?

A) The seriousness of the Jazz Age gave way to the gaiety of a distinct new period known as the Roaring Twenties.
B) The luxuries and experiences made possible by the Jazz Age gradually became available to the lowest classes as well, causing the affluent in society to lose interest.
C) The Second World War suddenly broke out in Europe, requiring the immediate deployment of American soldiers and making the Jazz Age appear frivolous.
D) The situation became direr for the Americans during the Great War, and civilians needed to turn their attention to the war effort at home.
E) The Great Depression caused the collapse of the Jazz Age and, with it, helped erode the American belief in freedom at all costs.