Read the following sentences: "After Muhammad's death, a book was
completed with Muhammad's teachings that he said were messages from
God... The second most important holy text in Islam is the Sunnah, a guide for how
to interpret the Qur'an and live a perfect life in accordance with God's will, as
exemplified by how Muhammad lived his life... Muslims look to the Qur'an and
Sunnah not only for spiritual guidance, but also for solutions to all the problems of
mankind."
What can be concluded about Islam based on this information?

A. Islam spread only after the Qur’an was created.

B. Islam became a religion after Muhammed died.

C. Islam deeply rooted in the teachings of Muhammad.

D. Islam is based on different interpretations of Muhammad’s teachings.