When transporting A2L refrigerant cylinders in a service vehicle, what is a key requirement according to Department of Transportation (DOT) regulations?
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A
Cylinders must always be chilled to below ambient temperature.
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B
The vehicle must be equipped with a specialized refrigeration unit.
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C
Cylinders must be positioned so the pressure relief valve is in contact with the vapor phase.
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D
A minimum of two different types of fire extinguishers must be present.