Which of the Following Situations Would Be Most Deserving of a Pediatrician's

Multiple Choice

Which of the following situations would be most deserving of a pediatrician's attention?

A) The mother of an infant 2 days postpartum notes that her baby has intermittent periods of hyperventilation followed by slow respirations or even brief periods of apnea.
B) A volunteer in the nursery notes that one of the infants, aged 2 weeks, appears unable to breathe through his mouth, even when his nose is congested.
C) A neonate is visibly flaring her nostrils on inspiration.
D) A midwife notes that a newborn infant's chest is retracting on inspiration and that the child is grunting.