You have an Exchange Server 2010 organization.  You need to recommend a mailbox storage management solution for your organization to meet thefollowing requirements： .Apply quota limits for users by department.Automatically apply quota limits for new users What should you recommend？（）

• A、A storage group for each department.
• B、A mailbox database for each department.
• C、An organizational unit for each department.
• D、A managed folder mailbox policy for each department.