Explanation

The Damin-i-Koh, meaning the 'skirts of the hills', was demarcated by the British in 1823 as a large tract in the Rajmahal hills for the settlement of the Santhals. The Santhals were encouraged to clear forests and take up settled agriculture there. The area later became the nucleus of the Santhal Parganas, created after the Santhal rebellion of 1855. The Mundas, Oraons and Saoras were not the communities for whom this settlement was created. Hence option A is correct.