If an abnormally large difference is maintained between the evaporator refrigerant temperature and the box air temperature within the refrigerated compartment, what will be the result?

Correct Answer: Option A — the evaporator coil will tend to excessively frost

A large temperature differential increases heat transfer driving moisture out of the air rapidly onto the coil. Under 46 CFR marine standards, this excessive frosting insulates the coil, further reducing heat transfer efficiency and starving the evaporator of proper airflow.