With which one of the following mountain tribes did the British first come into contact with after the grant of Diwani in the year 1765?

1. The question asks which mountain tribe the British first came into contact with after acquiring the Diwani of Bengal, Bihar, and Orissa in 1765. 2. The grant of Diwani gave the East India Company the right to collect revenue in these provinces. 3. As the British sought to consolidate their control and expand revenue collection, they gradually moved into adjacent territories, including the hilly regions bordering Bengal. 4. The Sylhet district (now in Bangladesh, then part of Bengal province) bordered the hills inhabited by the Khasi tribe. 5. Early interactions, often related to trade routes, resources (like limestone quarried by Khasis in Sylhet), and boundary disputes, brought the British officials based in Sylhet into contact with the Khasis (Option B) shortly after 1765. 6. Contact with other tribes like the Garos (A), Kukis (C), and Tipperahs (D) also occurred, but the earliest significant post-Diwani contact reported by administrators was often with the Khasis due to the proximity of their territory to the established administrative center of Sylhet.