An unemployed person is one, who is not able to get employment of even one hour, in half a day. Identify which of the following is NOT a source of data on unemployment.
1
Economic Survey, Ministry of finance, Government of India
2
National Sample Survey Office's Report of Employment and Unemployment Situation
3
Annual Reports of Periodic Labour Force Survey and Data of Registration with Employment Exchanges
4
More than one of the above
5
None of the above