To Circumvent the Right to Vote Given to African Americans

To circumvent the right to vote given to African Americans under the Fifteenth Amendment (1870) , southern states employed the "white primary" to limit the political influence of blacks.In Smith v.Allwright (1944) , the Supreme Court

A) outlawed white primaries.
B) held that poll taxes and literacy tests were constitutional.
C) ruled that the primaries were a matter for party control and could not be regulated by government.
D) held that poll watchers and registrars must be dispatched by the U.S.Justice Department to nine southern states and parts of seven others.