The Parents of a 9-Month-Old Infant Tell the Nurse That

The parents of a 9-month-old infant tell the nurse that they have noticed foods such as peas and corn are not completely digested and can be seen in their infant's stool.The nurse bases her explanation on knowing that:

A) Children should not be given fibrous foods until the digestive tract matures at age 4 years.
B) The infant should not be given any solid foods until this digestive problem is resolved.
C) This is abnormal and requires further investigation.
D) This is normal because of the immaturity of digestive processes at this age.