Option a is the correct answer The dialogue on Varna between King Avantiputta and Kachchana, a disciple of Buddha, appears in the Majjhima Nikaya. The Majjhima Nikaya is a collection of 152 suttas, or discourses, that are attributed to the Buddha. Important Tips The dialogue on Varna is a significant text in the history of Buddhism because it challenges the traditional view of the caste system. In the dialogue, King Avantiputta asks Kachchana to explain the origins of the caste system. Kachchana argues that the caste system is not natural or divinely ordained, but is a social construct that has been created by humans. The dialogue on Varna is a reminder that Buddhism does not endorse the caste system. In fact, the Buddha taught that all people are equal, regardless of their caste or social status.