Which of the following statements is true about the 1920s? OA. Itwas an era of extreme economic growth big social changes, and political conservatism. OB. Itwas an era of increased government participation in business and extremely liberal politics. OC. Itwas an era of slow economic growth, limited prosperity, and little social change. OD. It was an era of economic hardship, radical politics, and intense involvement in world affairs.