When Changing a Diaper, the Nurse Observes That a 2-Day-Old

When changing a diaper, the nurse observes that a 2-day-old infant has passed green-black, tarry stools. What should the nurse do?

A) Notify the provider immediately.
B) Do nothing; this is normal.
C) Give the baby sterile water until the mother's milk comes in.
D) Apply a skin barrier cream to the buttocks to prevent irritation.