What should the administrator do immediately after this change to prevent service failures?

An administrator has migrated a vCenter Server Appliance from version 5.5 to version 6.x. During the migration, the administrator selected DHCP for the appliance
and obtained a hostname from the DHCP server. The administrator adjusts the hostname after the migration and uses a static IP and hostname.
What should the administrator do immediately after this change to prevent service failures?

A.
Regenerate the SSL certificates.

B.
Re-register components to Single Sign-On.

C.
Update the /etc/hosts file.

D.
Execute the command services.restart vmware-vpxd.

Explanation:
Explanation/Reference: