A CET observes varying R-R intervals on a 2-year-old patient's EKG. Which of the following statements made by the CET would be correct? A) "The patient's heart rate is consistent and normal." B) "The EKG shows a stable rhythm without variations." C) "The varying R-R intervals are expected in a pediatric EKG." D) "The EKG indicates an abnormal heart rhythm in the child."