Consider the following pairs : State : Description I. Arunachal Pradesh : The capital is named after a fort, and the State has two National Parks II. Nagaland : The State came into existence on the basis of a Constitutional Amendment Act III. Tripura : Initially a Part 'C' State, it became a centrally administered territory with the reorganization of States in 1956 and later attained the status of a full-fledged State How many of the above pairs are correctly matched?

All three pairs are correct because Itanagar is named after the 14th-century Ita Fort and Arunachal Pradesh houses exactly two National Parks (Namdapha and Mouling); Nagaland was established through the 13th Constitutional Amendment Act, 1962; and Tripura transitioned from a Part ‘C’ state to a Union Territory in 1956 before gaining full statehood in 1972. Option (B) is the most tempting distractor if a candidate is uncertain about the specific number of National Parks in Arunachal or the precise constitutional history of the North-Eastern states. The core concept tested is the historical and constitutional evolution of the Indian Union, specifically the reorganization and unique administrative milestones of the North-Eastern states.