From the scheme given below, choose the appropriate
order of priorities in the management of a patient with polytrauma:
1.	Control of external haemorrhage
2.	Intravenous infusion and transfusion
3.	Maintenance of patent airway
4.	Relief of a tension pneumothorax.
5.	Splinting of fractures.
1,5,2,3,4
3,4,1,2,5
4,1,5,3,2
2,1,5,3,4