During HDN, the Newborn Develops Hyperbilirubinemia After Birth, but Not

During HDN, the newborn develops hyperbilirubinemia after birth, but not in utero because:

A) excretion of unconjugated bilirubin through the placenta into the mother's circulation is no longer possible.
B) hemoglobin does not break down into bilirubin in the intrauterine environment.
C) the liver of the fetus is too immature to conjugate bilirubin from a lipid-soluble to water-soluble form.
D) the destruction of erythrocytes producing bilirubin is greater after birth.