I need help with a few questions:

1- Which of these cultures was located in East Africa?
A; Mali
B; Ghana
C; Swahili
D; Songhai

3- Which sentence best describes a way in which the cultures of East and West Africa were different?

A; East African Cultures were less involved in trade than West African Cultures.
B; Most West African cultures were Muslim, while most East African cultures were Christian.
C; West African cultures were dominated by large kingdoms and East African cultures were dominated by large kingdoms and East African cultures were dominated by small kingdoms.
D;East African societies had more central control than West African societies.