Given
1. Training is required at different levels namely, for unskilled workers, semiskilled workers. Skilled workers, office staff, supervisory staff and managerial.
2. Semi-skilled workers are selected amongst the unskilled workers who have made themselves conversant with the handling of the machine.
3. Management training has become an essential activity of every firm.
4. Training programme should be periodically evaluated to determine its effectiveness.
Select the correct statement.