A nurse is performing a home health visit for a pediatric client who has had a recent onset of headaches. The nurse notices the home is poorly ventilated, and there is no placement of carbon monoxide detectors. Which of the following appliances should the nurse identify as a potential source of carbon monoxide?

A. Washing machine: Washing machines do not produce carbon monoxide because they do not involve combustion. They operate using electricity and water, making them an unlikely source of carbon monoxide exposure in the home. B. Electric stove: Electric stoves do not burn fuel and therefore do not generate carbon monoxide. While gas stoves can be a source of carbon monoxide if improperly ventilated, electric stoves do not pose this risk. C. Refrigerator: Refrigerators operate using electrical power and do not involve combustion processes. As a result, they do not produce carbon monoxide and are not considered a source of exposure. D. Kerosene heater: Kerosene heaters rely on fuel combustion and can produce carbon monoxide, especially in poorly ventilated spaces. Inadequate ventilation increases the risk of carbon monoxide buildup, making this appliance a significant potential source.