Why is the presence of the comitatus ethic in Beowulf significant ?

A. The comitatus ethic represents the shift from a nomadic to a more organized social structure.
B. The comitatus ethic is evidence of a period in which behavior was guided by Christian ethics.
C. The comitatus ethic shows a historical return to older types of political organization.
D. The comitatus ethic represents a culture in which rulers had no responsibilities to their citizens.