The Primigravida in Labor Asks the Nurse to Explain the Electronic

The primigravida in labor asks the nurse to explain the electronic fetal heart rate monitor strip. The fetal heart rate baseline is 150 with accelerations to 165, variable decelerations to 140, and moderate long-term variability. Which statement indicates that the patient understands the nurse's teaching? "The most important part of fetal heart monitoring is the:

A) "Absence of variable decelerations."
B) "Presence of variability."
C) "Fetal heart rate baseline."
D) "Depth of decelerations."