Which is correct about the evolution of medieval towns in India?

The correct answer is Option (3) → These are fort towns which came up on the ruins of ancient town

Medieval Towns: About 100 of the existing towns have their roots in the medieval period. Most of them developed as headquarters of principalities and kingdoms. These are fort towns which came up on the ruins of ancient towns. Important among them are Delhi, Hyderabad, Jaipur, Lucknow, Agra and Nagpur.