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?

Arunachal Pradesh's capital Itanagar is named after Ita Fort ('Ita' meaning bricks), and the state has two national parks — Namdapha and Mouling — so pair I is correctly matched. Nagaland was created by the State of Nagaland Act, 1962 (an ordinary law of Parliament under Article 3/4), not by a Constitutional Amendment Act — so pair II is incorrectly matched. Tripura was initially a Part 'C' State, became a Union Territory after the States Reorganisation Act of 1956, and attained full statehood in 1972 — so pair III is correctly matched. Hence two pairs are correctly matched.