What Was the Purpose of the Industrial Workers of the World

What was the purpose of the Industrial Workers of the World (IWW) ?

A) It would serve largely as a mediator, bringing all rival socialist parties together under one mission and prioritizing compromise over any sectarian disputes.
B) It was an organization that had originated in Europe and that spread to the United States with the chief goal of improving international trade.
C) It was a labor union geared toward middle-class white workers, as they had a difficult time identifying with the immigrants and migrants of typical unions.
D) It was intended to be one giant labor union that would take back the means of production and would be open to all workers.
E) It was a labor union that focused solely on the practical details of writing policy affecting workers, rather than bringing in more emotional topics such as human rights.