Arrange the following developments in an ascending chronological sequence

Q. Arrange the following developments in an ascending chronological sequence:
(1) Iltutmish’s recognition as the Sultan of Delhi (2) Building of first mosque
in Delhi (3) Fall of Chalukyas (4) Destruction of Baghdad by Mongols Select
the code for correct chronological sequence:
(a) 1, 3, 2, 4
(b) 2, 1, 4, 3
(c) 3, 2, 1, 4
(d) 1, 2, 4, 3
Ans: (c) 3, 2, 1, 4