| What would be a major consequence of allowing the refrigeration system of a low pressure fixed CO2 fire extinguishing system to remain inoperable? |
| A) The entire charge may eventually be lost due to CO2 boil-off venting through the relief valve. |
| B) Liquid CO2 would overflow from the tank through the drain line as the temperature increased. |
| C) Excessive condensation inside the tank would freeze causing a restriction in the discharge piping. |
| D) The warmed charge of CO2 would not be effective in extinguishing a fire. |
