How Did Upper Guinea Differ from Lower Guinea in the 1400

How did Upper Guinea differ from Lower Guinea in the 1400 CE?

A) Lower Guinea was primarily democratic; Upper Guinea had autocratic leadership.
B) Women were rice farmers in Lower Guinea; in Upper Guinea they traded.
C) While Lower Guinea peoples continued to practice traditional African religions, the influence of the Islamic religion was felt more strongly in Upper Guinea.
D) Women were denied political power in Lower Guinea but held powerful political and religious positions in Upper Guinea.