Explanation:

Explanation: A commission for National Scheduled Caste and Scheduled Tribe was set up after 65th Constitutional Amendment.

Note the Timeline: The government had created a Commission for the Scheduled Castes and Scheduled Tribes via a resolution in 1987. It was given constitutional status by passing Constitution (65th amendment) Act, 1990, leading to creation of National Commission of Scheduled Castes and Scheduled Tribes (NCSCST) in 1992. Via the Constitution (89th Amendment) Act, 2003; the NCSCST was split into two different commissions viz. NCSC and NCST by inserting Article 338-A.