What Sort of Relationships Did the Aryans Maintain with the Conquered

What sort of relationships did the Aryans maintain with the conquered population?

A) The Aryans immediately incorporated all members of conquered groups who were willing to fight in their armies.
B) The conquered peoples, called Dasas, were enslaved and the Aryans prohibited all social relationships with them.
C) Because the Aryans lacked a system of social stratification, the conquered peoples were soon incorporated in Aryan society.
D) The conquered people were permitted to enter all ranks of Aryan society except the priesthood.