Which is the correct chronological order of the following rulers of slave dynasty who ruled over Delhi ?
1
Iltutmish, Balban, Nasiruddin, Razia
2
Razia, Nasiruddin, Balban, Iltutmish
3
Nasiruddin, Balban, Razia, IItutmish
4
Iltutmish, Razia, Nasiruddin, Balban