Consider the following statements about Ahar civilization-
I.The people of Ahad knew how to smelt copper.
II.These people were not familiar with rice
III.Metal work was a means of economy for the Ahad residents.
IV.Black-red coloured pottery has been found from here, on which geometrical shapes are usually engraved with white colour.

Ahar is a major Chalcolithic culture site located in south-eastern Rajasthan. The people of Ahar culture were basically farmers and animal herders. They were familiar with wheat, barley and rice. Another name of Ahar is 'Tambavati' (place of copper) which indicates that copper was available here in abundance. The residents of this place used to melt copper and make desired items. Metal work Ahad residents | It was a major source of economy. From here black red colored pottery has been obtained, on which geometrical shapes are generally engraved with white colour. Thus option (a) is the correct answer.