The correct option is C Daulatabad
Muhammad bin Tughlaq changed the capital from Delhi to Daulatabad in an attempt to protect the Sultanate from a Mongol invasion. It is alleged that he ordered every last resident of Delhi to pack up and walk to the new capital. While many perished on the journey, Tughlaq decided to shift his capital back to Delhi, earning him a lot of ridicule from his contemporaries as well as historians of later ages.