If a refrigeration compressor had developed a slightly high suction pressure accompanied with an abnormally low suction temperature, the problem could be a result of which of the following?

Correct Answer: Option B — liquid refrigerant flooding back from the cooling coil

Liquid flooding back from the cooling coil indicates unevaporated liquid entering the suction side of the compressor. This causes the suction gas to drop significantly in temperature while boiling off within the suction line, raising suction pressure.