John C. Calhoun's "South Carolina Exposition" Argued That

John C. Calhoun's "South Carolina Exposition" argued that

A) secession was a final remedy for oppression of the states.
B) tariffs affecting one section more than another were unconstitutional.
C) there should be a system of "dual presidents" with mutual veto powers.
D) states had the right to nullify federal laws.
E) trade fairs and expositions should promote southern agriculture.