One Major Reason That the Second World War Inspired Postwar

One major reason that the Second World War inspired postwar changes in race relations in the United States was the

A) lack of an impact it had on the Great Depression.
B) racist nature of opponents of the United States, such as the Nazis, during the war.
C) number of northerners it inspired to move to the South.
D) lessons in equality American soldiers learned from fighting with European soldiers.
E) greater number of people receiving higher education.