| When two refrigerated spaces in a refrigeration system are served by a single compressor and condenser, yet are maintained at different temperatures, what is true concerning an installed back pressure regulating valve? |
| A) it maintains a higher pressure in the evaporator coil of the colder box |
| B) it maintains a higher pressure in the evaporator coil of the warmer box |
| C) it maintains a lower pressure in the evaporator coil of the warmer box |
| D) it maintains equal pressures in the evaporator coils of both boxes |
