Consider the following statements about the Luni River.
a) The Origin of Luni River is Nag Hills.
b) Luni Basin is a part of Western Arid Desert.
c) Its water remains salty till Balotara (Barmer) and later becomes freshwater.
d) At the origin it is called Sagarmati.
Which of the statement/statements given above is/are correct?
1. a and c only
2. a, b and c
3. a, b and d
4. a and d only