What can you conclude from this passage from a decision made by the Supreme Court?

"The right of a citizen of the United States to vote for the nomination of candidates for the United States Senate and House of Representatives in a primary which is an integral part of the elective process is a right secured by the Federal Constitution, and this right of the citizen may not be abridged by the State on account of his race or color."

- from Smith v. Allwright (1943)

A) The end of the "Jim Crow Era" was finally a reality.
B) The ideals of the Reconstruction Era would never become a reality.
C) The black residents of Southern states would never have full equality.
Eliminate
D) The practice of having "white primaries" in the South was unconstitutional.