If a fire occurs in the boiler room because of a leaking fuel line to a burner, you shut off the fuel using the（）

A.paint thinner in an open can
B.fuel accumulation in the bilge
C.oily rags in an unvented compartment
D.gasoline stored in steel drums

A.foam
B.CO₂
C.low velocity water fog
D.high velocity water fog

A.close the vent
B.pump out the tank
C.activate the fixed CO₂ system
D.cut off the heating coils