The correct option is A The high born and the low born
The Sangam social structure was based on the traditional caste system. There were farmers, shepherds, hunters, fisherman, blacksmiths, weavers, carpenters, merchants, shippers, and priests. The Brahmins were ideal priests and even the chief advisors to the kings. The interesting thing is that though the Brahmins played a crucial and constructive role, the Sangam society was not priest dominated and thus even the other castes enjoyed respect in society.