The correct answer is Iltutmish​.

Key Points

• Iltutmish (1211-1236):
  • He succeeded to the throne after Qutub-ud-din-Aibak.
  • He was the third ruler of the Delhi Sultanate, belonging to the Mamluk dynasty.
  • He constituted corp of forty loyal slave Amirs known as Turkan-i-Chihalgani also called Chalisa.
  • He introduced the silver coin (tanka) and cooper coin (jittal).
  • He made Delhi the capital in place of Lahore.​

Additional Information

• Firoz Shah Tughlaq:
  • He was the third ruler of Tughlaq dynasty that ruled over Delhi from 1351 to 1388 AD.
  • He established the Diwan-i-Khairat - office for charity
  • He established the Diwan-i-Bundagan -- department of slave
  • He is known to establish four new towns, Firozabad, Fatehabad, Jaunpur and Hissar.
  • He appointed Khan-i-Jahan Maqbal, a Telugu Brahmin convert as wazir (prime minister). 
    • The wazir helped the Sultan in his administration and maintained the prestige of the Sultanate during this period.
• Mohammad bin Tughlaq (1325-1351):
  • He shifted his capital from Delhi to Deogir and renamed it as Daulatabad.
  • Daulatabad is situated in Maharashtra. 
  • He built a road from Delhi to Deogir and also set up rest houses for the people.
  • He introduced bronze coins of the same value as Silver coins.
  • He established a new department of agriculture known as “Diwan-i-Kohi".
  • He also provided agricultural loan “Takavi” to the farmers.
• Muhammed Quli Qutub Shah (1580-1612):
  • He was the fifth sultan of the Qutub Shahi dynasty of Golkonda
  • He founded the city of Hyderabad, in South-central India and built its architectural centrepiece, the Charminar. 
  • He founded the city of Hyderabad and named it as Bhagyanagar after his Hindu mistress Bhagamati.​