Under API 510, what action should an inspector take if, during an internal inspection, continuous gas monitoring suddenly alarms for oxygen-deficient atmosphere?
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A
Immediately exit the vessel and do not re-enter until the hazard is identified and corrected
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B
Increase ventilation flow and continue working while wearing a dust mask
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C
Notify the supervisor by radio and await instructions before moving
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D
Switch to a chemical-cartridge respirator and complete the inspection