What Was the Most Important Consequence of A

What was the most important consequence of A. Philip Randolph's threat to lead a march on Washington?

A) Franklin Roosevelt pledged to integrate the defense industries and the government.
B) Industrialists branded the demonstrators as unpatriotic, and many were immediately fired.
C) Organized labor recognized the solidarity of the African American workers and integrated their unions.
D) Because many of the workers left their jobs to attend the rally in Washington, they were fired for being absent from their shifts.