The Nagarjuni Hill caves, located close to the Barabar Hills, contain inscriptions of Dasharatha Maurya. Which of the following is a key architectural or historical distinction of these caves?

Options:

• A: They were dedicated exclusively to the Theravada Buddhist monks, unlike the Barabar caves which were for the Ajivikas.
• B: They contain the earliest known rock-cut representations of the Hindu deity Vishnu in his Varaha avatar.
• C: They are the earliest examples of double-storied rock-cut monasteries in India, preceding the Ellora caves by several centuries.
• D: They consist of three caves (Gopika, Vadathika, and Vapiyaka) which feature highly polished interiors and inscriptions of Dasharatha Maurya dedicating them to the Ajivikas.

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