How could the Salesforce Admin limit the membership of this new community to US customers?

Universal Containers has a customer Community in Europe and plans to roll out a separate Community for their US customers. They have separate profiles for their US, Europe, and Asia customers.

How could the Salesforce Admin limit the membership of this new community to US customers?
A . Add
C . users to the Community sharing set.
D . Add only
F . customer profiles as Community members.
G . Add the
. customer public group to the Community as members of the Community.
. Add each
. customer as a Community member from their contact record.

Answer: B