Why did Southern states use poll taxes, literacy tests, and grandfather clauses as Reconstruction came to an end?

(1 point)
Responses

to maintain Republican control of state governments
to maintain Republican control of state governments

to keep poor white Southerners from voting
to keep poor white Southerners from voting

to keep African Americans from voting
to keep African Americans from voting

to ensure voters would remain loyal to the Union

The correct answer is: to keep African Americans from voting.