The correct option is
D A-4, B-1, C-2, D-3
The Constituent Assembly which was constituted in November 1946 comprised of several Committees. The Drafting Committee headed by Dr. B.R. Ambedkar was entrusted with the drafting of the Indian Constitution.
The Advisory Committee on Fundamental Rights, Minorities and Tribal and Excluded areas was headed by Sardar Vallabh Bhai Patel.
Union Constitution Committee was headed by Pt. Jawahar Lal Nehru
Order of Business Committee was headed by K.M Munshi.