After the War,industrial Workers Had to Battle Against Declining Wages

After the war,industrial workers had to battle against declining wages and diminished union influence due to the economic downturn and the fact that

A) the AFL has softened its position on the 8-hour day and 40-hour week.
B) immigration had increased,thereby flooding cities with cheap labor.
C) the government had ceased its role in enforcing corporate-labor cooperation and price control.
D) unions were unable to mobilize for strikes as they had in the past.