A standard operating procedure reads: 'When encountering a locked door, firefighters shall attempt forcible entry only after confirming fire or life safety conditions exist. If no immediate threat is confirmed, a supervisor must authorize entry.' A firefighter smells smoke but sees no flames. What should the firefighter do before forcing entry?
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A
Force entry immediately since smoke is present
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B
Contact a supervisor for authorization
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C
Wait for visible flames before acting
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D
Leave the scene and call for additional units