The correct option is B Chariot maker
Rathakara or the Chariot maker is mentioned in several Hindu scriptures such as Rigveda, Yajurveda, Atharvaveda, Samhitas etc. The social status of the Rathakaras is described on the inscription that the occupations of the Rathakaras included architecture, building coaches and chariots, erecting gateways for temples, building mandapas, making jewels for the king.