A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）. A:an air leak has developed in the tank B:the tank cooling system has malfunctioned C:the pilot cylinder discharge valve is leaking D:an excessive amount of insulation has been installed on the tank and piping

A crew member reports that the high-pressure alarm light of a low-pressure CO₂ fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.
A:an air leak has developed in the tank
B:the tank cooling system has malfunctioned
C:the pilot cylinder discharge valve is leaking
D:an excessive amount of insulation has been installed on the tank and piping

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