The Nurse Is Preparing to Monitor the Fetal Heart Rate

The nurse is preparing to monitor the fetal heart rate (FHR) of a pregnant client. What should the nurse explain to a nursing student as being the baseline (BL) of this heart rate?

A) "The baseline FHR excludes periods of marked variability."
B) "Normal baseline FHR ranges from 100 to 180 beats per minute."
C) "The baseline FHR should include periodic or episodic changes in FHR."
D) "The baseline rate is the mean FHR during a 5-minute period rounded to increments of 5 beats per minute."