Which of the Following Is True About Slavery, Prior to the Civil

Which of the following is true about slavery, prior to the Civil War?

A) Slaves were a very small portion of the population in the South.
B) Slavery had faded as an important source of the southern economy.
C) Slaves made up almost half of the population in the South.
D) Slavery had spread to the North, having been legalized there in the 1840s.
E) Only slaves brought to the country before 1800 could be legally freed.