Option b is the correct answer. Statement 1 is correct: Manipuri Sankirtana is a traditional form of performing art that involves ritual singing, drumming and dancing in the temples and domestic spaces of Manipur. It is practiced by the Vaishnava people of the Manipur plains, who worship Lord Krishna. Statement 2 is incorrect: The cymbals are not the only musical instruments used in the performance. Other instruments include Kartal (cymbals), Pung (drum), Flute, Harmonium and Violin. Statement 3 is correct: Manipuri Sankirtana is practiced primarily by the Meitei Hindus (primarily Vaishnavas) in Manipur and by the Vaishnava Manipuri population settled in the neighbouring States of Tripura and Assam. The theology and lore of Krishna is central to these performances, but they assimilate in their rendering formal features carried over from music and dance in Manipur's pre-Vaishnavite past. The main repertoire consists of Nata Pala, which is performed all over the Manipur valley.