In OpenStack, which of the following descriptions of Keystone-related concepts is wrong?

In OpenStack, which of the following descriptions of Keystone-related concepts is wrong?
A . Endpoints are divided into Admin Internal and Public. These different types of endpoints are open to different users or services.
B . Roles can be granted at the domain or project level, roles can be assigned at the individual user or group level, and role names are unique within the domain that owns the role
C . The service in Keystone verifies the validity of the token for the user, locates the location of other services and provides the location endpoint to the user, and can also call other services
D . All user names, group names, project names, and role names are not globally unique in OpenStack, but are unique only in the domain to which they belong.

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Answer: D