Arrange the following events in chronological order during Chandragupta's reign:
A. Conflict with the Nandas
B. Treaty with Seleucus Nikator
C. Establishment in Punjab
D. Formation of the Mauryan empire
1
A-B-C-D
2
C-A-D-B
3
B-C-D-A
4
D-A-B-C
Arrange the following events in chronological order during Chandragupta's reign:
A. Conflict with the Nandas
B. Treaty with Seleucus Nikator
C. Establishment in Punjab
D. Formation of the Mauryan empire