50 points this is a timed assignment

why did the confederacy want to control fort sumter?

a fort sumter was located in a union state and controlling it would make it easier to hold off union troops.
b fort sumter was located within the confederacy, and it protected important shipping lanes and commercial areas.
c fort sumter was located on the border of a union state and a confederate state, which gave it a high strategic value.
d fort sumter was located within the confederacy, and the union wanted to use it to store weapons and other supplies.