Read the passage and answer the question:

The Sino-Indian conflict affected the opposition as well. This and the growing rift between China and the Soviet Union created irreconcilable differences within the Communist Party of India (CPI). The pro-USSR faction remained within the CPI and moved towards closer ties with the Congress. The other faction was for sometime closer to China and was against any ties with the Congress. The party split in 1964 and the leaders of the latter faction formed the Communist Party of India (Marxist) (CPI-M). In the wake of the China war, many leaders of what became CPI (M) were arrested for being pro-China. The war with China alerted the Indian leadership to the volatile situation in the Northeast region. Apart from being isolated and extremely underdeveloped, this region also presented India with the challenge of national integration and political unity. The process of its reorganisation began soon after the China war. Nagaland was granted statehood; Manipur and Tripura, though Union Territories, were given the right to elect their own legislative assemblies.

During the first attack in October 1962, which region did Chinese forces manage to capture key areas of?

Arunachal Pradesh

The correct answer is Option 1 - Arunachal Pradesh

China claimed two areas within the Indian territory: Aksai-chin area in the Ladakh region of Jammu and Kashmir and much of the state of Arunachal Pradesh in what was then called NEFA (North Eastern Frontier Agency)

China launched a swift and massive invasion in October 1962 on both the disputed regions. The first attack lasted one week and Chinese forces captured some key areas in Arunachal Pradesh. The second wave of attack came next month. While the Indian forces could block the Chinese advances on the western front in Ladakh, in the east the Chinese managed to advance nearly to the entry point of Assam plains. Finally, China declared a unilateral ceasefire and its troops withdrew to where they were before the invasion began.