As the Umayyad Dynasty expanded their control of North Africa and the Iberian peninsula, the Arabic language also spread. What was one reason for the spread of Arabic along with the spread of Islam?

A.
The sacred text of Islam, the Koran, was written in Arabic.
B.
Written languages were already being used in those areas.
C.
They were forced by the Islamic rulers to learn Arabic.
D.
People in those areas did not have their own written languages.

A. The sacred text of Islam, the Koran, was written in Arabic.