The nurse if giving instructions to parents of a 4-month-old infant with tetralogy of fallot. An important teaching point should include:

A. Adding rice cereal could cause excess work on the heart and worsen symptoms. The focus should be on low-stress feeding. B. Knee-chest position increases systemic vascular resistance, which helps relieve hypercyanotic spells (tet spells) in infants with tetralogy of Fallot. C. Trendelenburg position is not effective for relieving cyanosis in this condition. D. The infant with tetralogy of Fallot should be fed smaller, more frequent meals rather than every 2 hours.