There are two primitive tribes in a virgin forest. The totems of the two tribes worship differently. Tribe A worships snakes and considers snakes to be their ancestors. Tribe B worships birds and considers birds to be their ancestors. Of these two tribes, The totem worship of a person is exactly the same as the totem worship of his tribe. If there is intermarriage within the tribe, the children born belong to this tribe, if there is intermarriage, the children born belong to the mother's tribe,. Knowing that someone worships birds, which of the following must be wrong? ["Someone's father is from Tribe.", "Someone's mother is from Tribe.", "Someone's parents are from tribe B.", "Someone's mother is from tribe B."]