Correct Option: B

Iltutmish received confirmation of his robe of honour and title Nasir amir al-mu'minin (Helper of the Commander of the Faithful) from the 'Abbasid Caliph al-Mustansir in 626 (1229) and remained on the throne for twenty-six years. This added an element of strength to Iltutmish's authority and gave him a status in the Muslim world.