- Mahavamsa - History of Buddhist Snaga which is a part of Mahavamsa contains text about Ashoka. - Mahavamsa is written in the form of a poem, which is divided into 4 parts. - The epic Buddhist poem 'Mahavamsa', composed by a Buddhist monk in the sixth century AD contains several references to the Mauryan Emperor Ashoka. Hence, Option 4 is correct. - It is written in the Pali language, an early language used mostly in Buddhist scriptures and texts.