PLZ HELP WILL GIVE BRAINLIEST!!!!! URGNT! DUE NOW!

Why is it important that the Sunni and Shia split happened such a long time ago?

A. Because it helps us to understand why th two denominations are so different now.

B. It helps us to understand why the Shiite population is so massive

C. It helps us to make sense of why Abu Bakr was so hated.

D. It isn't important.