The Usual Treatment for Neonatal Jaundice Is Exposing the Infant

The usual treatment for neonatal jaundice is exposing the infant to certain wavelengths of light.The infant wears only a diaper and undergoes the light treatment continuously for several days,even at night.Why can the infant's treatement then be discontinued?

A) because light treatment stimulates liver growth
B) because the transition between fetal hemoglobin to adult is complete
C) because the light generates additional RBCs
D) because the digestive tract is then large enough to secrete bile
E) All of the answers are correct.