Which statement about the Swahili ethnic group is accurate?

Group of answer choices

A. It developed along coast of East Africa when Arab and Persian traders intermarried with Bantu-speaking people.

B. About 2000 years ago they began migrating from the Sahara region to central and southern Africa.

C. People believe the kingdom was founded in 1701 with help of holy man.

D. They began migrating from Southwest Asia into North Africa in the late 600's.