Which Statement About Members of Unilineal Descent Groups Is Correct

Which statement about members of unilineal descent groups is correct?

A) They know exactly which group they belong to and where their primary loyalties lie.
B) They are confused about their relationship to persons not included in their descent group.
C) They are related only to females if they are in a matrilineal group.
D) They are related only to males if they are in a patrilineal group.