Answer :
An extinguishing agent must B) have a numerical rating to be rated for a particular class of fire. Hence, option B) is correct.
To be rated for a particular class of fire, an extinguishing agent must have a numerical rating. The rating system categorizes extinguishing agents based on the types of fires they can effectively combat.
For example, Class A fires involve ordinary combustible materials like wood and paper, while Class B fires involve flammable liquids like gasoline or oil. Extinguishing agents are rated based on their ability to extinguish these different classes of fires.
A numerical rating is assigned to each agent based on its effectiveness. Higher numerical ratings indicate a more effective agent for a specific class of fire.
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