Write exactly whom and where the information came from I think.... but I could be wrong
Answer;
If a large amount of lubricant is removed from a system during refrigerant recovery is normal for an expansion valve/receiver dryer type.
Refrigerant recover is meant to remove refrigerants from cooling equipment using machines according to EPA standards. Refrigerant recover machines are used by Technicians before repairing or performing maintenance on air conditioners, freezers or refrigerators.
I believe the answer would be B, From. Hope this helps!
A, Facile
GOOGLE: (especially of success in sport) easily achieved; effortless.
I hope this helps! Good luck!
Its being explained in the sentence