Hey

It's great that you have interest in Sociology and Anthropology but the option to chose is with you. You need to analyse on which subject you have a better hold that will fetch you more marks, because that matters the most. You can follow last year papers and see trend whether Sociology or Anthropology would be suitable for you.

According to reports, Anthropology had few repeated questions in the past paper, so that might help you in determining. But solely it is your decision considering you need to score high marks.