What does ESXi Autoconfiguration do?

What does ESXi Autoconfiguration do?

A. sets up host profiles

B. configures system network and storage devices

C. determines the number of hosts to be deployed

D. configures Auto Deploy

Reference: https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.install.doc%2FGUID-3A409297-517E-4E7D-99D0-DE41386911B3.html