Correct Option: C

Kalibangan is a town located on the left or southern banks of the Ghaggar (Ghaggar-Hakra River), identified by some scholars with Sarasvati River in Tehsil Pilibangan, between Suratgarh and Hanumangarh in Hanumangarh district, Rajasthan, near Bikaner. It was a major provincial capital of the Indus Valley Civilization. Kalibangan is distinguished by its unique fire altars and "world's earliest attested ploughed field."