In the three-tiered system of Fetal Heart Rate (FHR) tracings, which categories are included and what do they signify?
A) Category I signifies an abnormal tracing requiring immediate intervention.
B) Category II FHR tracings are indeterminate.
C) Category III indicates a normal tracing requiring no action.
D) Category I is a normal tracing requiring no action.
E) Category III tracings are abnormal and require immediate intervention.
