Find out the incorrect statement from the following about the Yazidi group?

Find out the incorrect statement from the following about the Yazidi group.

1. It is one of Iraq's oldest minorities.
2. They are concentrated in northern Iraq around Mount Sinjar.
3. This ancient religion is rumoured to have been founded in 11th century by Umayyad Shaikh.
4. This religion has taken some elements from Christianity so they are targeted by Islamic terrorist groups.