| A typical shipboard domestic multi-box refrigeration system operates with one compressor and condenser. What is the purpose of the sensing line connected to the thermal bulb at the evaporator coil outlet? |
| A) To direct evaporator outlet pressure to the lower part of the solenoid bellows. |
| B) To open or close the solenoid valve when the box temperature increases or decreases. |
| C) To open the back-pressure regulating valve when evaporator coil pressure increases. |
| D) To transmit the bulb pressure (proportional to the coil temperature) to the thermal expansion valve diaphragm. |
