Home / Ancient History Batch / HIS_ANC_1994_170 Social Stratification UPSC Archival Analysis Exam Year 1994 Evidence Source Link ID: HIS_ANC_1994_170 Ref: Standard Educational Reference In which phase, the concept of untouchability was put clearly? A. Rigvedic phaseB. Later Vedic phaseC. Later Gupta phaseD. Dharmashastra phase