The Nurse Instructing the Mother on How to Care for the Umbilical

The nurse instructing the mother on how to care for the umbilical cord of the newborn would direct the mother to:

A) wash the cord only with warm water and gently dry it
B) apply 70% isopropyl alcohol or hydrogen peroxide to the base next to the skin and to the cord with each diaper change
C) use a solution of baby shampoo and water on the cord, rinse, and dry carefully
D) wash the cord with a solution of Ivory soap and water, dry, air for 30 minutes, and apply triple antibiotic ointment after baths and diaper changes