The Nurse Is Caring for a 5-Kg 8-Month-Old Infant Admitted

The nurse is caring for a 5-kg 8-month-old infant admitted to the hospital by the health care provider,who was concerned about the infant's low weight.The infant's birth weight was 3.5 kg.The nurse knows that on average an infant doubles his or her birth weight at what age?

A) 2 to 3 months
B) 4 to 5 months
C) 6 to 7 months
D) 8 to 9 months