A nurse is collecting a blood phenylketonuria (PKU) test for a newborn prior to discharge.The newborn's guardian asks the nurse what a positive PKU test would mean.Which of the following statements should the nurse make?

Choice A rationaleA positive finding for galactosemia, not PKU, indicates the inability to metabolize galactose. Galactosemia is a different metabolic disorder that requires a separate dietary intervention.Choice B rationaleA positive PKU test does not indicate slow metabolism. Instead, it signifies the inability to metabolize phenylalanine, an amino acid.Choice C rationalePhenylketonuria (PKU) is a genetic disorder that leads to the inability to break down the amino acid phenylalanine. Without proper management, it can accumulate in the body and cause brain damage and other health issues.Choice D rationaleA positive PKU test is not directly linked to an increased risk for neurological anomalies in general. The specific issue in PKU is the inability to metabolize certain amino acids, primarily phenylalanine, which can cause neurological damage if untreated. .