Correct Option: A

The Deccan is delineated by the Western Ghats on the west, the Nilgiri Hills on the south, the Eastern Ghats on the east, and the Aravalli and Chhota Nagpur hills on the north. The Chhota Nagpur Plateau is a plateau in eastern India, to the northeast of the Deccan plateau which covers much of Jharkhand state as well as adjacent parts of Orissa, West Bengal, Bihar and Chhattisgarh.