How did trade in Saharan Africa differ from Indian Ocean trade?

A. Saharan African trade focused on salt and silver, whereas Indian Ocean trade focused on fish and cattle.

B. Saharan African trade relied on silk and silver, whereas Indian Ocean trade relied on gold and salt.

C. Saharan African trade relied on the region's rivers, whereas Indian Ocean trade relied on monsoon winds.

D. Saharan African trade was land based, whereas Indian Ocean trade relied on water routes.