The Chalcolithic sites of Bihar, such as Chirand, Sonpur, and Taradih, show a distinct transition from the Neolithic to the Chalcolithic phase. Which of the following features uniquely distinguishes the Eastern Chalcolithic context from the Western Indian (Malwa/Jorwe) Chalcolithic cultures?

Options:

• A: Complete absence of painted pottery traditions.
• B: Total reliance on wheat and barley cultivation with no rice cultivation.
• C: High abundance of bone tools and antler implements alongside copper.
• D: Absence of any burial practices or post-cremation urn burials.

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