Which action will troubleshoot this?

After deploying the vCenter Server Appliance, an administrator can log into the vSphere Web Client as
[email protected], but not with Active Directory domain credentials.
Which action will troubleshoot this?

A.
Create a domain group named “esxadmins” and add the domain account to it.

B.
Add the Active Directory domain as a Single Sign-On identity source.

C.
Change the Active Directory account password to match [email protected]” password.

D.
Create a child domain named “vSphere.local”.

Explanation:
https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.security.doc/GUIDA2A90265-4A6B-4E23-9681-97B867E55457.html