The States of the Confederate States of America Seceded After

The states of the Confederate States of America seceded after Lincoln's election because:

A) Lincoln promised to abolish slavery immediately after taking office.
B) Lincoln was pushing for an invasion of the South.
C) The southern secessionists were convinced that Lincoln would move against slavery despite his assurances otherwise.
D) The southern secessionists planned to invade the North and impose slavery on the entire union.
E) The southern secessionists believed that Jefferson Davis had won the 1860 election but was denied the office through fraud.