The Discovery of Adena and Hopewell Burial Sites Containing Goods

The discovery of Adena and Hopewell burial sites containing goods tells us what about these peoples?

A) Some type of social hierarchy likely prevailed in these societies.
B) The Adena and Hopewell believed that in order for a person to pass into death peacefully, the individual needed all of his or her earthly belongings.
C) The Adena and Hopewell believed that by burying their loved ones with their belongings they would gain blessings from ancestral spirits.
D) The belongings of the dead were viewed as tainted and needed to be discarded.