During an annual maintenance inspection, a technician finds that a dry chemical extinguisher has caked or hardened agent inside. What is the required action?
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A
Shake the extinguisher vigorously to break up the agent and return it to service
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B
Recharge only the portion of agent that has hardened
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C
Remove from service, empty, clean, and recharge with new agent
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D
Tag it for the next scheduled 6-year maintenance and return to service