How did the development of black codes impact South Carolina after the civil war?

A. Black codes maintained the unequal social status of African Americans in South Carolina after the civil war.
B. Congress enacted legislation creating black codes in South Carolina as a predecessor to the Freedmen's bureau.
C. African Americans initiated the adoption of black codes to secure voting rights in South Carolina.
D. Southern states, including South Carolina, adopted black codes to meet the conditions of Reconstruction.