Q on chem

[snow]

Can someone help me on Question38 of November 2008 Chemistry Multiple chopice?

Which of the following would be suitable for use in a fire extinguisher?
1 CBrF3
2 CH3(CH2)5CH2Br
3 HCl

Please!!!!!

 

[mista.lova.lova]

only 1 will stop fire from exapnding...

 

[Sweet_angel]

ya only 1 is correct........

 

[snow]

But the reason is????