Which of the following correctly lists the order of the cardiac conduction system?

node - SA node - bundle of His - right & left bundle branches - Purkinje fibers

Purkinje fibers - right & left bundle branches - bundle of His - AV node - SA node

SA node - AV node - bundle of His - right & left bundle branches -Purkinje fibers

SA node - AV node - Purkinje fibers - right & left bundle branches - bundle of His