A Nurse Is Teaching Staff About the Conduction of the Heart

Multiple Choice

A nurse is teaching staff about the conduction of the heart. In which order will the nurse present the conduction cycle, starting with the first structure
1) Bundle of His
2) Purkinje network
3) Intraatrial pathways
4) Sinoatrial (SA) node
5) Atrioventricular (AV) node

A) 5, 4, 3, 2, 1
B) 4, 3, 5, 1, 2
C) 4, 5, 3, 1, 2
D) 5, 3, 4, 2, 1