As the Therapist Applies a Pulse Oximeter Finger Probe to a Neonate

As the therapist applies a pulse oximeter finger probe to a neonate who is receiving supplemental oxygen, she notices that the SpO₂ reading is 100%. What should the therapist do in this situation?

A) The therapist should continue monitoring the patient because the reading is accurate.
B) The therapist should obtain an arterial blood sample to confirm SpO₂ level.
C) The therapist should switch to using a capnometer.
D) The therapist should reduce the fraction of inspired oxygen.