While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then （）.<br>A:enter the tank safely<br>B:suspect the accuracy of the reading<br>C:ventilate the tank<br>D:test for nitrogen

While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then （）.
A:enter the tank safely
B:suspect the accuracy of the reading
C:ventilate the tank
D:test for nitrogen

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