The nurse is obtaining a history on a 3-month-old infant. During the interview, the mother states, "I think she is getting her first tooth because she has started drooling a lot." The nurse's best response would be
a. "You're right, drooling is usually a sign of the first tooth."
b. "It would be unusual for a 3-month-old to be getting her first tooth."
c. "This could be the sign of a problem with the salivary glands."
d. "She is just starting to salivate and hasn't learned to swallow the saliva."