The Mother of a 6-Month-Old Infant Is Distressed Because the Infant

The mother of a 6-month-old infant is distressed because the infant can say "dada" but not "mama" and asks the primary care pediatric nurse practitioner why this is when she is the one who spends more time with the infant. How will the nurse practitioner respond?

A) "At this age, your baby does not understand the meaning of sounds."
B) "Babies at this age cannot make the 'ma' sound."
C) "Most sounds made by babies at this age are accidental."
D) "This may mean that your baby doesn't hear well."