A client at 38 weeks gestation is undergoing labor induction with intravenous oxytocin for preeclampsia with severe features. Which of the following findings wo require the nurse to discontinue the oxytocin infusion?

Rationale: A. Six contractions in 10 minutes indicate uterine tachysystole (excessive contractions), which can reduce fetal oxygenation and requires stopping oxytocin immediately. B. Elevated blood pressure is concerning but not a direct reason to stop oxytocin; it should be managed concurrently. C. Contractions lasting 75 seconds are prolonged and may warrant intervention, but frequency is more critical for stopping oxytocin. D. Fetal heart rate of 155 bpm with moderate variability is within normal limits and does not require stopping oxytocin.