| As shown in the illustrated typical self-contained refrigerant recovery unit, what is the purpose of the suction-side oil separator? |
| A) prevents contamination of the recovery unit compressor's lubricating oil with the disabled unit compressor's lubricating oil |
| B) prevents slugging of the recovery unit's compressor with liquid refrigerant |
| C) allows separation of oil from the recovered refrigerant so that an equal amount of new oil may be recharged when the unit is recharged with refrigerant |
| D) all the above |
