In addition to weighing the cartridge, which other maintenance is required for a cartridge-operated dry chemical extinguisher?

Correct Answer: Option B — Check the hose and nozzle for clogs.

Cartridge-operated dry chemical extinguishers require periodic inspection of the expellant gas cartridge weight alongside verifying that the discharge hose and nozzle remain entirely free of powder packing, moisture clogs, or salt buildup.