You work as a network Exchange administrator at Company.com.The Company.com network currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com organization makes use of Microsoft Exchange Server 2010 as their messaging solution.During the course of the business week you receive instruction from Company.com to make use of Role Based Access Control （RBAC） to provide a user named Rory Allen the ability to manage recipients in a specific organizational unit （OU）. What should you do？（）

• A、You should consider having a new management scope created.
• B、You should consider having the default management scope modified.
• C、You should consider having a new direct role assignment created.
• D、You should consider having a new management role assignment policy created.