Who among the following was appointed by the Constituent Assembly of India as Head of the Sub-Committee for North-East Frontier (Assam) Tribal and Excluded Areas?

Gopinath Bordoloi, then Premier of Assam, headed the Sub-Committee on North-East Frontier (Assam) Tribal and Excluded Areas, one of the regional sub-committees set up under the Advisory Committee on Fundamental Rights, Minorities, etc., to examine the administration of tribal and excluded areas. The sub-committee's recommendations shaped the Sixth Schedule provisions for autonomous tribal governance in Assam.