Explanation:

- The story of Maynamati and Gopichandra is a notable tale in Nath literature.

- Option 4: Nath literature is indeed the correct category for this story. It relates to the mystical and spiritual traditions of the Nath yogis.

- Option 1: Chandimangal Kavya is a Bengali verse about the goddess Chandi; it focuses on her stories and exploits.

- Option 2: Manasamangal Kavya highlights the worship and tales of the goddess Manasa, particularly in Bengal.

- Option 3: Sanskrit epics refer to grand compositions like the Mahabharata and Ramayana, not related to Maynamati and Gopichandra.