A nurse is caring for a client who is in active labor. The nurse notes late decelerations in the FHR on the fetal monitor tracing. Which of the following actions should the nurse take first?

A. Assessing for tachysystole is important, but intervention is needed immediately to improve fetal oxygenation. B. Internal monitoring may provide more accurate data, but it does not address the immediate fetal distress. C. The first action should be to reposition the client to a left lateral position to improve uteroplacental blood flow and oxygenation to the fetus. D. Increasing IV fluids can help with placental perfusion, but positioning is faster and more immediately effective.