According to the Theory of Secession

According to the theory of secession,

A) each state gave away its fundamental sovereignty and therefore was permanently subject to the Constitution.
B) no state could legally withdraw from the union.
C) no state had given away its fundamental sovereignty and therefore each could withdraw from the union.
D) no state had ever given away its fundamental sovereignty, but each had to recognize the final authority of the federal government.
E) secession could only be accomplished if a popular vote were held on the issue.