Which of the following arguments are correct about tribes in India?
(A) Adivasis were always the oppressed group, as they are now.
(B) Tribes were absorbed in Hindu society through Sanskritisation.
(C) Tribes occupied a special trade niche, trading forest produce, salt and elephants.
(D) Adivasis often exercised dominance over the plains people through their capacity to raid them.
Choose the correct answer from the options given below :