The End of the Pullman Strike Came When

The end of the Pullman Strike came when

A) the Pinkerton Detective Agency was called in to arrest the protesters.
B) the American economy fell into a depression as a direct result of the loss of labor.
C) the Supreme Court ruled that unions did not have federally protected civil rights.
D) President Cleveland dispatched federal troops to remove train cars from the tracks.
E) the Supreme Court guaranteed the protesters new jobs by establishing new infrastructure projects.