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?

"Your baby is at a higher risk because they have had four bowel movements in the first day of life."

"Your baby is at a higher risk because they were born with congenital dermal melanocytosis."

"This is because your baby's liver is not yet efficient at breaking down red blood cells."

"This is because your baby is breastfed. You should start supplementing with formula"