A nurse is caring for a client who is receiving oxytocin to augment labor.The client has an intrauterine pressure catheter and an internal fetal scalp electrode for monitoring.Which of the following is an indication that the nurse should discontinue the infusion?

Choice A rationaleContraction frequency every 3 minutes indicates an appropriate labor pattern with regular contractions and is not an indication to stop oxytocin.Choice B rationaleContraction duration of 100 seconds exceeds the normal range (usually less than 90 seconds), risking uterine hyperstimulation and fetal compromise, necessitating oxytocin discontinuation.Choice C rationaleA fetal heart rate of 118/min falls within the normal range (110–160/min), indicating fetal well-being. Oxytocin does not need to be stopped.Choice D rationaleModerate variability in fetal heart rate demonstrates adequate fetal oxygenation and nervous system function, suggesting no oxytocin discontinuation is required.