All the following are true of third-degree atrioventricular block except: a. The atria and the ventricles pace the heart independent of each other b. Both the atrial and the ventricular rates are...

All the following are true of third-degree atrioventricular block except:

a. The atria and the ventricles pace the heart independent of each other

b. Both the atrial and the ventricular rates are usually regular

c. There is no relationship between the P waves and the R waves

d. Although the atria and ventricles are disassociated, their rates are generally the same