THIS IS SUPER DUPER URGENT! please help me very ez, wil brainly, 5 star, and thank you in advance

How did Jefferson Davis become involved with leading the Confederacy?

A. He had a lot of ideas about how to gain more power.
B. He had a lot of military and political experience.
C. He had a lot of support from the citizens.
D. He had a lot of support from the soldiers.