Technician a Says If the Suction Line to the Compressor

Technician A says if the suction line to the compressor is covered with thick frost, this might indicate that the expansion valve is flooding the evaporator. Technician B says the formation of frost on the outside of a line or component means there is a restriction to the flow of refrigerant. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Correct Answer:

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