How did the election of Abraham Lincoln lead to the secession of South Carolina and other southern states?

Question 5 options:

As a Republican, Lincoln opposed the expansion of slavery and his victory convinced many Southern states to secede.

Lincoln was a believer in the theory of states' rights and encouraged the Southern states to secede from the Union.

After the election of Lincoln, Congress passed a bill allowing states to reconsider their standing in the Union.

The election of Lincoln led to a new Constitutional Convention that states needed to ratify to remain in the Union.

The correct option is: As a Republican, Lincoln opposed the expansion of slavery and his victory convinced many Southern states to secede.