Which of the following was a significant difference between the beliefs of the people in the image and the beliefs of earlier communities of Muslims?

a Earlier communities focused on reading the Quran and following the Prophet Muhammad's example, while the group pictured also emphasized using ritual to focus on interior spirituality
b Earlier groups of Muslims believed Muhammad was a prophet, while the group pictured believed he was the son of god.
c Earlier communities of Muslims believed dance and music were useful methods to spread the Islamic religion, while the group pictured believed dance and music should not be celebrated with outsiders
d. Earlier groups mostly spread the religion through military conquest, while the group pictured also used ritual and ceremony.