A Primigravida Is Admitted to the Birth Setting in Early

A primigravida is admitted to the birth setting in early labor.She is 3 cm dilated,−2 station,with intact membranes and FHR of 150 bpm.Her membranes rupture spontaneously,and the FHR drops to 90 bpm with variable decelerations.The initial response from the nurse would be to:

A) Perform a vaginal exam.
B) Notify the physician.
C) Place the client in a left lateral position.
D) Administer oxygen at 2 l per nasal cannula.