You work as the enterprise exchange administrator at Xxx .The Xxx network is running in a Microsoft Exchange Server 2010 environment.Xxx has a distribution group named KingData.You receive instruction from Xxx to allow an employee Mia Hamm to review all mail to KingData and approve it.How can you ensure that the above goal is achieved but at the same time Mia Hamm must not be able to change group membership？（）

• A、You must modify the properties of KingData
• B、You must enable folder redirection.
• C、You must allocate Mia Hamm as a group moderator for KingData.
• D、You must implement recipient filtering.