The Sequence of Transmission of Nervous Impulses in the Heart $\to$

The sequence of transmission of nervous impulses in the heart is:

A) AV node $\to$ SA node $\to$ Bundle of His $\to$ Purkinje network
B) SA node $\to$ Bundle of His $\to$ AV node $\to$ Purkinje network
C) SA node $\to$ AV node $\to$ Bundle of His $\to$ Purkinje network
D) SA node $\to$ AV node $\to$ Purkinje network $\to$ Bundle of His