The correct option is C Purus sides with Bharata in the battle of ten kings
In connection with the famous Dasrajna Yudha or the battle of ten kings, mentioned in various hymns of the Rig-Veda, many important Vedic tribes and their personalities are found mentioned. The battle of ten kings was between Sudas, a Bharata king of the Tritsu family and the confederacy of ten well-known tribes- Puru, Yadu, Turvasa, Anu, Druhyu, Alina, Paktha, Bhalanas, Shiva and Vishanin. The former five are said to be Aryan tribe while the later 5 are said to be Non-Aryan tribes.