What is the minimum number of compute nodes required to run the NetApp Deployment Engine for NetApp

What is the minimum number of compute nodes required to run the NetApp Deployment Engine for NetApp HCI?

A. 2

B. 1
C. 3
D. 4

Reference: https://docs.netapp.com/us-en/hci/docs/task_hci_getstarted.html#:~:text=The%20minimum%20cluster%20for%20NetApp,to%20all%20NetApp%20HCI%20networks.