A fireguard is positioned outside a room where hot work is occurring. Sparks cannot be seen through the closed door. The fireguard should:
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A
Periodically open the door to visually inspect the work area for sparks or smoke
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B
Trust that the worker will stop if a fire starts
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C
Stay at the door and listen for sounds of a fire
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D
Move to a location where sparks are visible from another angle