A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. Qutb­ud­din Aibak, Iltutmish, ?, Ghiyas­ud­din Balban

A

Razia Sultana

B

Ala­ud­din Khilji

C

Firoz Shah Tughlaq

D

Bahlol Lodi