A nurse is reinforcing teaching with new parents about the provider's prescription for a serum bilirubin test. Which of the following statements should the nurse include in the explanation?

A. "Your baby is at a higher risk because they have had four bowel movements in the first day of life.": Frequent bowel movements in a newborn typically help excrete bilirubin and reduce the risk of jaundice. Therefore, having multiple stools on the first day is actually protective rather than a risk factor. B. “This is because your baby's liver is not yet efficient at breaking down red blood cells.”: Newborns naturally have an immature liver that is less efficient at conjugating and excreting bilirubin. This leads to an accumulation of unconjugated bilirubin in the blood, making a serum bilirubin test necessary to monitor for jaundice. C. "This is because your baby is breastfed. You should start supplementing with formula.": Breastfeeding alone is not a contraindication nor an immediate reason to supplement. Breastfeeding jaundice can occur in some infants, but formula supplementation is not automatically required and should be based on assessment by the provider. D. “Your baby is at a higher risk because they were born with congenital dermal melanocytosis.”: Congenital dermal melanocytosis (Mongolian spots) is a benign skin pigmentation and does not affect bilirubin metabolism.