At Home St

At Home St. Jean in Rwanda, forensic archaeologists concluded that a mass grave site was part of a program of genocide because:

A) cut marks on bones showed that many individuals were killed by machetes from behind, as if they were fleeing their attackers.
B) cut marks on the bones of hands and forearms showed that some people were unmercifully macheted to death with their arms raised in self defense.
C) the murdered civilians were unarmed.
D) All of the answers are correct.