Let's analyze the events in chronological order:
- India-China War (1962): The India-China War occurred in 1962, when tensions escalated over border disputes, especially concerning the Aksai Chin and Arunachal Pradesh regions.
- India's first test of a nuclear device (1974): India conducted its first successful nuclear test, known as "Smiling Buddha," in May 1974, marking its entry into the nuclear-armed countries list.
- Terrorists attack on World Trade Centre in America (2001): The tragic terrorist attacks on the World Trade Centre in New York City occurred on September 11, 2001, an event that reshaped global security concerns.
- The Anti-Ballistic Missile Treaty (1972): The ABM Treaty between the United States and the Soviet Union was signed in 1972, limiting the development and deployment of anti-ballistic missile systems.
Thus, the correct chronological order is:
(i) India-China War → (ii) India's first test of a nuclear device → (iii) Terrorists attack on World Trade Centre → (iv) The Anti-Ballistic Missile Treaty.
Thus, the correct answer is (A) (i), (ii), (iii), (iv).