Which answer choice BEST describes the article's structure?
(A) The article explains the introduction of Islam into northern Africa by showing its influence on government.
(B) The article illustrates the development of a ruling dynasty by focusing on the role of a prominent historical figure.
(C) The article provides a sequence of events that show the emergence of Mali as a dominant power in West Africa.
(D) The article highlights the origin of the "Lion King," and demonstrates how Mansa Musa continued long-standing traditions.