Arrange the following conquests in the correct sequence:
a) Rashtrakutas overthrow Chalukyas
b) Mahmud of Ghazni raids Somnath
c) Rajaraja I expands Chola territory
d) Prithviraj III defeats Muhammad Ghori in 1191
1
b-d-c-a
2
c-a-b-d
3
a-c-b-d
4
d-b-a-c