Correct option is A
The Ulgulan Revolt, also known as the Munda Rebellion, was led by Birsa Munda in the late 19th century (1899-1900) in the region that is today known as Jharkhand, India. Birsa Munda was a tribal freedom fighter, religious leader, and folk hero who mobilized the Munda tribe and other indigenous communities against the British colonial rule and the exploitative zamindari system. The rebellion aimed at establishing the Munda Raj and removing the British government and missionaries. Despite its suppression, Birsa Munda's movement is remembered as a significant early act of indigenous resistance against colonial and feudal oppression.
Sidhu and Kanhu were prominent leaders of the Santhal rebellion (1855-56), another significant tribal uprising against the British colonial administration and the zamindari system, but in a different region and era than the Ulgulan Revolt.