A Woman in the Active Phase of the First Stage

A woman in the active phase of the first stage of labor is using a shallow pattern of breathing,which is approximately twice the normal adult breathing rate.She starts to report feeling lightheaded and dizzy and states that her fingers are tingling.Which intervention should the nurse immediately initiate?

A) Contact the woman's health care provider.
B) Tell the woman to slow her pace of her breathing.
C) Administer oxygen via a mask or nasal cannula.
D) Help her breathe into a paper bag.