The Wilmot Proviso was a measure meant to ban slavery in territories acquired by the United States during the Mexican War.

Which of the following is TRUE of the results of the Wilmot Proviso?

A
Sectionalism increased and led to greater tensions in the Senate.
B
South Carolina elected John C. Calhoun as a states’ rights senator.
C
South Carolina seceded from the United States, starting the Civil War.
D
Slavery was not an issue in the Wilmont Proviso.