What Were "Slave Factories" Such as the One at Elmina

Multiple Choice

What were "slave factories" such as the one at Elmina?

A) markets in the Americas where newly-arrived slaves were auctioned off to planters
B) trading posts in Africa where slaves were bought and sold
C) early industrial centers where slaves produced manufactured goods in mass quantities
D) any large-scale enterprise,such as sugar plantations,which relied primarily on slave labor