A nurse is caring for a newborn delivered by vaginal birth with a vacuum assist. The newborn's mother asks about the swollen area on her son's head. After palpation to identify that the swelling crosses the suture line, which of the following is an appropriate response by the nurse?

B Caput succedaneum occurs due to compression of blood vessels. D Mongolian spots can be found on the skin of many newborns. C This is erythema toxicum, which is a transient condition. A This is a cephalhematoma, which can occur spontaneously.