Why is a carbon dioxide extinguisher not always effective on a Class A fire?

A) It can freeze the water in the fire, making it worse.
B) CO2 extinguishers are too expensive for Class A fires.
C) CO2 extinguishers deplete oxygen, which is not effective on Class A fires.
D) CO2 extinguishers are too heavy to carry to Class A fire locations.

A carbon dioxide (CO₂) extinguisher is not always effective on a Class A fire because it depletes oxygen, which is needed for the combustion process in a Class A fire.

Explanation:

A carbon dioxide (CO₂) extinguisher is not always effective on a Class A fire because it depletes oxygen, which is needed for the combustion process in a Class A fire. CO₂ extinguishers work by displacing oxygen and smothering the fire. However, Class A fires involve ordinary combustible materials like wood, paper, and cloth, which require oxygen to burn. So, removing oxygen with a CO₂ extinguisher may not be as effective as using other types of extinguishers designed specifically for Class A fires.

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