While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.<br>A:change the expansion valve adjustment<br>B:readjust the water regulating valve to increase the flow of water<br>C:purge air from the condenser<br>D:clean the waterside of the condenser

While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.
A:change the expansion valve adjustment
B:readjust the water regulating valve to increase the flow of water
C:purge air from the condenser
D:clean the waterside of the condenser

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