Which comment made by a parent of a 1-month old would alert the nurse about the presence of a congenital heart defect?

A. "He is always hungry.": This is not typically a sign of a congenital heart defect. Many infants are hungry frequently as they grow, so this would not be an alerting sign. B. "He is fussy for several hours every day.": Fussiness is common in infants and does not necessarily indicate a congenital heart defect. C. "He tires out during feedings.": This is a concerning sign. Infants with congenital heart defects often have difficulty feeding due to poor oxygenation and energy reserves. Fatigue during feedings is a common symptom of heart defects. D. "He sleeps all the time.": Sleeping a lot could be normal for a 1-month-old infant, and it would not necessarily indicate a congenital heart defect unless the infant is lethargic or difficult to rouse.