The correct option is C
Musa I of Mali and commonly known as Mansa Musa, was the tenth meek, translated as "king of kings" or "emperor", of the Mali Empire. At the time of Mansa Musa's rise to the throne, the Mali Empire occupied the territory previously ruled by the Ghanaian Empire, as well as the Mande (Mali) and its immediate vicinity. Musa had a multitude of titles, among them those of Emir del Manding, Lord of the Mines of Wangara and conqueror of Ghanata, Futa-Jallon and at least a dozen states, was the richest ruler of his time and is the most rich of all time if your assets are adjusted for inflation.
Musa was a devout Muslim and, fulfilling one of the Islamic precepts, began his pilgrimage to Mecca, which made him well known in North Africa and the Middle East. For Musa, Islam was the foundation of the "cultured world of the Eastern Mediterranean." He spent much time supporting the growth of Islam in his Empire.