Which one of the following groups of districts in Bihar indicates the correct descending order of population density as per the 2001 census?
1
Darbhanga, Samastipur, Siwan, Saran
2
Siwan, Saran, Darbhanga, Samastipur
3
Saran, Darbhanga, Samastipur, Siwan
4
More than one of the above
5
None of the above