What Was the Demographic Impact of the Slave Trade on Africa

What was the demographic impact of the slave trade on Africa?

A) The slave trade exported millions, but the loss was made up as a result of the natural prolifacy of the Africans.
B) Population in Africa seems actually to have grown, despite the number of men, women, and children exported to the Americas.
C) The slave trade had the impact of skewing the population of central Africa in favor of a disproportional number of women.
D) As a result of the slave trade, the population of Africa was only one -third of what it would have been without the export of men and women.