Regarding cardiac electrical properties:

• A. all cardiac cells have the same resting membrane potential
• B. cholinergic fibres act predominantly by blocking tonic sympathetic input
• C. discharge rates of pacemaker tissue does not change significantly with temperature
• D. the bundle of HIS is not the most rapidly conducting part of the conducting system
• E. the last parts of myocardium to depolarise normally do not include the septum