In the Assessment of a 1-Month-Old Infant,the Nurse Notes a Lack

In the assessment of a 1-month-old infant,the nurse notes a lack of response to noise or stimulation.The mother reports that in the last week he has been sleeping all the time and when awake all he does is cry.The nurse hears that the infant's cries are very high pitched and shrill.What would be the nurse's appropriate response to these findings?

A) Refer the infant for further testing.
B) Talk with the mother about eating habits.
C) Nothing;these are expected findings for an infant this age.
D) Tell the mother to bring the baby back in a week for a recheck.