The most appropriate pacemaker mode for a patient that has atrial fibrillation with slow ventricular response is:
A. AAI (atrial pacing, atrial sensing, inhibited ventricular pacing)
B. VOO (ventricular pacing, asynchronous)
C. DDD (dual-chamber pacing, dual-chamber sensing, dual response)
D. VVI (ventricular pacing, ventricular sensing, inhibited)