Which statement is correct regarding the primary method of fire extinguishment using CO2?

A
CO2 primarily extinguishes fire by reducing the oxygen concentration (smothering/suffocation).
B
CO2 primarily extinguishes fire by cooling the burning material below its ignition temperature.
C
CO2 primarily extinguishes fire by physical interference with the chemical chain reaction.
D
CO2 primarily extinguishes fire by emulsifying the fuel source.
E
CO2 primarily extinguishes fire by creating a protective foam layer.