Following statements concerning specific bradycardic agents (Falipamil, Alinidine) are true, EXCEPT:

a) Bradycardic drugs have a moderate reflex and vascular dilative action caused by the stimulation of sensitive nerve endings

b) The predominant effect of bradycardic drugs is a decrease in heart rate without significant changes in arterial pressure

c) The protective effect of bradycardic drugs is likely due to a reduced O2 demand

d) Specific bradycardic agents are used in the management of a wide range of cardiovascular disorders, including sinus tachyarrhythmias and angina pectoris