Why Did Many of the Irish Immigrants in the Workingmen's

Why did many of the Irish immigrants in the Workingmen's Benevolent Association (WBA) form the more secretive organization known as the Molly Maguires?

A) to negotiate independently with the owners of the coal mines where they worked
B) to organize strikes which the WBA opposed
C) to seek violent retribution against the foremen and managers of the coal mines
D) to form a union where Irish immigrants would be welcomed