Identify the correct sequence of the steps of grievance procedure required to be followed for the grievance handling.
1. Departmental Manger
2. Immediate Supervisor
3. Arbitration
4. Trade Union's intervention
1
1, 2, 3 & 4
2
2, 3, 1 & 4
3
2, 1, 4 & 3
4
2, 4, 1 & 3