Which Statement Describes the Type of Violence That Was Common

Which statement describes the type of violence that was common to the Athapascans?

A) They carried out systematic raids of settled farming communities.
B) The chiefdoms competed against one another for additional lands to cultivate.
C) They used ritual sacrifice of humans to appease the gods.
D) Acts of violence were often at the family and clan level, as they were often acts of revenge.