While Making Rounds in the Nursery, the Nurse Sees a 6-Hour-Old

While making rounds in the nursery, the nurse sees a 6-hour-old baby girl gagging and turning bluish. Which of the following would the nurse do first?

A) Alert the physician stat and turn the newborn to her right side.
B) Administer oxygen via facial mask by positive pressure.
C) Lower the newborn's head to stimulate crying.
D) Aspirate the oral and nasal pharynx with a bulb syringe.