Match the following Years in List 1 with the political incident associated with it in List 2:

(A)- II, (B)- I, (C)- IV, (D)- III

The CPI was formed on 26 December 1925 at the First Party Conference in Cawnpore (Kanpur). From 1935, the Communists primarily worked within the Indian National Congress. A split occurred in December 1941 when the Communists decided to support the British in their war against Nazi Germany.

In 1934, a group of young leaders formed the Congress Socialist Party (CSP) within the Congress, seeking a more radical and egalitarian approach. In 1948, Congress amended its constitution, not allowing its members to have dual membership, forcing the Socialists to form a separate Socialist Party.

The Socialists faced a dilemma when Congress declared its goal as a socialist pattern of society in 1955 (Avadi Resolution), making it difficult to present themselves as a distinct alternative. Some Socialists, led by Rammanohar Lohia, distanced themselves from and criticized the Congress, while others, like Asoka Mehta, advocated limited cooperation with the Congress.

The CPI had a significant split in 1964 due to ideological differences between the Soviet Union & China. The pro-Soviet faction remained as the CPI, while the opponents formed the Communist Party of India (Marxist) (CPI(M)). Both parties continue to exist today.