A nurse is reinforcing teaching with the parents of a newborn about bathing. Which of the following instructions should the nurse include in the teaching?

A. "Check the water temperature with your finger": Checking water temperature with a finger is unreliable because fingers may tolerate higher temperatures without discomfort. It is recommended to use the inside of the wrist or a thermometer to ensure the water is warm but not hot, typically around 100°F (37.8°C), to prevent burns. B. "Hold your baby under running water when washing his hair": Holding a newborn under running water is unsafe because it can cause sudden chilling, difficulty breathing, or even slipping. Instead, caregivers should use a damp, warm washcloth or gently pour water over the baby's head while securely supporting it. C. "Cleanse the eyes from the inner canthus outward": Cleaning from the inner to the outer canthus is correct technique because it prevents introducing contaminants into the tear duct. This motion also minimizes the spread of bacteria, reducing the risk of eye infections in the delicate eyes of a newborn. D. "Set the water heater to 125.6 degrees Fahrenheit": A water heater set to 125.6°F presents a high risk of scald burns in infants. Safety guidelines recommend setting the water heater to no higher than 120°F (48.9°C) to reduce the risk of accidental burns during bathing or household water use.