A Mother Brings Her 4-Month-Old to the Clinic with Concerns

A mother brings her 4-month-old to the clinic with concerns about a small padlike growth on the mid-upper lip that has been present since the baby was 1 month old.The infant has no health problems.On physical examination,the nurse notes a 0.5-cm,fleshy,elevated area on the mid-upper lip.There is no evidence of inflammation or drainage.What would the nurse tell this mother?

A) "This is an area of irritation caused by teething and is nothing to worry about."
B) "This is an abnormal finding and should be evaluated by a specialist."
C) "This is the result of chronic drooling and should resolve within the next month or two."
D) "This is a sucking tubercle caused by friction due to breastfeeding or bottle feeding and is normal."