The Reconstruction of Southern Society Was Particularly Difficult Because

The reconstruction of southern society was particularly difficult because:

A) the southerners had lost their position in the international cotton market.
B) the integration of 4 million newly freed slaves posed grave political questions.
C) southern cities had suffered so severely in Sherman's and Grant's campaigns that many were not fully rebuilt until the early 20th century.
D) about 23 percent of the southern population had died.
E) the infrastructure of the South was so damaged that it set the region behind for decades to come.