Question: In the ECG below, the patient has a pacemaker. Examine the pacemaker behavior and select the correct statement below. Need Assignment Help? Question Select one: a. There is a dual-chamber pacemaker present with normal function. b. There is a normally-functioning single chamber ventricular pacemaker that started competing with the sinus rhythm. c. A single chamber ventricular pacemaker is malfunctioning. d. An atrial pacemaker is present and operating normally. The spikes are too small to be seen.