The vacuum level on a system being evacuated pulls down to 2000 microns, but goes no lower even as the vacuum pump continues to run. This indicates:
A) That the system is charged with the wrong type of refrigerant.
B) The refrigeration oil is incompatible with the refrigerant in the system.
C) That the vacuum is complete.
D) The presence of water in the system.
D
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Fill in the blank(s) with correct word
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