get all records of last row of every roll no

Question

My data base table with value using SQL Server 2008 R2

 

ROLL NO	SLNO	TXN DATE	CLOSING AMOUNT
16CS1001	1		700
16CS1008	2		1000
16MA1006	1		1300
16CS1001	2		800
16CH1201	1		1000
16CS1008	1		1600
16MA1006	2		1200
16CH1201	2		500
16CS1008	3		900
16MA1006	3		700
16CS1008	4		500

 

 I want to get out put

 

ROLL NO	SLNO	TXN DATE	CLOSING AMOUNT
16CS1001	2		800
16CS1008	4		500
16MA1006	3		700
16CH1201	2		500

 

 

 Please give me a sql query to sorting this.