What Is True About Southern Economic Redevelopment

What is true about southern economic redevelopment?

A) Northerners known as "scalawags" came south to exploit the South's economic vulnerability.
B) Republican-dominated Reconstruction governments sought to encourage southern industry.
C) Unlike the North, southern governments became notorious for corruption, which explains the skyrocketing public debt.
D) One success of the postwar South was in laying as much railroad track as the rest of the nation combined.