Why Did the States of the Confederate States of America

Why did the states of the Confederate States of America secede after Lincoln's election?

A) Lincoln had promised to abolish slavery immediately after taking office, which greatly angered and scared southerners.
B) Lincoln was pushing for an invasion of the South in his victory speech, which alerted southerners that the time had come.
C) The southern secessionists were convinced that Lincoln would move against slavery despite his assurances otherwise.
D) Throughout the campaign, the southern secessionists had secretly 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.