While Orienting a New Nurse to the Obstetrics Unit, the R.N

While orienting a new nurse to the obstetrics unit, the R.N. preceptor is describing how to determine the baseline (BL) fetal heart rate (FHR) . Which statement should the R.N. preceptor include in order to accurately describe the BL FHR?

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