The nurse is caring for a client with a permanent pacemaker. The client's monitor shows a pacemaker spike prior to the QRS complex. What would be the nurse's best action?

A. Increasing sensitivity is not indicated if pacemaker spikes are seen before QRS complexes. B. A pacemaker spike followed by a QRS complex indicates the pacemaker is successfully capturing and stimulating ventricular contraction. C. Calling a rapid response is not necessary if pacing is effective. D. The spike before the QRS complex indicates ventricular pacing, not atrial pacing.