How was the Arab trade in Africans different from the Atlantic slave trade?

(A) Unlike Arab slave merchants, those involved in the Atlantic slave trade were motivated by religion. (B) Slaves taken for the Atlantic slave trade had no prospect of eventual liberty, but slaves taken by Arab merchants did. (C) Slaves taken for the Atlantic trade were predominantly female; slaves taken by Arab merchants were mostly male. (D) Slaves taken by Arab merchants were likely to have a shorter life span than those taken for the Atlantic trade.Explanation: According to the end of the excerpt, the North African slaves could look forward to the possibility of freedom. While all slave trade was motivated by profit, the passage indicates that the North Africans rationalized the capture of Africans who were considered idolaters (A). West African slaves were predominantly male; North African slaves were predominantly female (C). Slaves doing plantation work in the Caribbean had a notoriously shorter life span, and most of those slaves came from West Africa (D).