The nurse is providing care to a newborn client who presents in the pediatric clinic for a 2- week health maintenance visit. The parents of the newborn are concerned, as their baby has "gas all the time." Which responses from the nurse are appropriate?
a. "Your baby has a relaxed lower esophageal sphincter, which is causing the gas."
b. "Your baby lacks the enzyme amylase, which is causing the gas."
c. "Your baby lacks the enzyme insulin, which is causing the gas."
d. "Your baby has an immature liver, which is causing the gas."
e. "Your baby lacks an enzyme that helps to digest fats, which is causing the gas."