Which of the following statements best expresses the location of American Indian groups and the colonies in North America?

A. American Indian groups coexisted with colonists since they already lived in the same area.

B. American Indian groups were already living in the area where the 13 colonies were planted.

C. American Indian groups had already formed boundaries where the 13 colonies were established.

D. American Indian groups had settled throughout eastern North America where the 13 colonies were located.