Correct option is B
The correct chronological order of these Delhi Sultans is:
Iltutmish (1211–1236)
Ruknuddin Firuz (1236)
Razia Sultana (1236–1240)
Nasiruddin Mahmud (1246–1266)
Balban (1266–1287)
Thus, option (b) C, A, D, E, B is the correct sequence.
Information Booster:
Iltutmish, the third ruler of the Slave dynasty, consolidated the Delhi Sultanate and was succeeded briefly by his son Ruknuddin Firuz. Razia, his daughter, was the first and only female Sultan of Delhi, noted for her administrative acumen and bravery. Nasiruddin Mahmud ruled later, maintaining the Sultanate’s stability. Balban, one of the most powerful rulers of the Slave dynasty, strengthened the Sultanate’s military and administrative structures, consolidating its power.