How were the growth of Christianity and islam similar during the postclassical era

What is one way that the growth of Islam and Christianity were similar during the postclassical era?

A. Both declined in popularity because of government persecution.

B. Both played a central role in establishing powerful civilizations.

C. Both took on philosophies promoting peace and refused to commit violence.

D. Both religions produced Golden Ages in the regions they dominated.

Answer Would Be: D