In Anthropology,the Issue of Human Rights

In anthropology,the issue of human rights:

A) is not relevant,because anthropologists believe in cultural relativism.
B) can be challenging,as different cultures define rights differently.
C) is at the forefront of doing anthropological research,as researchers are not allowed to work in countries where there is warfare.
D) is not important,because there are no inalienable human rights.
E) prevents anthropologists from doing research overseas.