You need to use Role Based Access Control (RBAC) to provide a user the ability to manage recipients in a specific organizational unit (OU).

You have an Exchange Server 2010 organization.

You need to use Role Based Access Control (RBAC) to provide a user the ability to manage recipients in a specific organizational unit (OU).

What should you do first?

A.
Create a new direct role assignment.

B.
Create a new management role assignment policy.

C.
Create a new management scope.

D.
Modify the default management scope.