Which of the following is true about Gotras?

The people (specially Brahmanas) were classified on the basis of Gotras. Each Gotras was named after a Vedic seer. All those who belonged to the same Gotras were regarded as his descendants. All of these

All of these

One Brahmanical practice, evident from c. 1000 BCE onwards, was to classify people (especially Brahmanas) in terms of gotras. Each gotra was named after a Vedic seer, and all those who belonged to the same gotra were regarded as his descendants. Two rules about gotra were particularly important: women were expected to give up their father’s gotra and adopt that of their husband on marriage and members of the same gotra could not marry.