When configuring a UNIX client to authenticate against a Microsoft Active Directory server, the top-level entry in the domain is dc=ad,dc=example,dc=com. What is the default DN of the container where users and groups are stored?
A. CN=USERS,DC=DA,DC=EXAMPLE,DC=COM
B. CN=EXAMPLE,DC=AD,DC=USERS,DC=COM
C. CN=USERS,DC=AD,DC=EXAMPLE,DC=COM
D. CN=USERS,DC=AD,DC=EXAMPLE,DC=ORG