Which of the following modern party trace their origin to the Socialist Party?

All of the above

The Socialist Party originated during the mass movement stage of the Indian National Congress in the pre-independence era.
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 differentiated themselves from both the Congress and the Communists by advocating democratic socialism.
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.

Many parties in contemporary India, like the Samajwadi Party, the Rashtriya Janata Dal, Janata Dal (United), and the Janata Dal (Secular) trace their origins to the Socialist Party.