You have an Exchange Server 2010 organization. You plan to provide users with the ability to schedule meetings. You need to recommend a scheduling solution that meets the following requirements： .Ensures that users can schedule conference rooms for meetings .Ensures that conference room owners can change the settings of meetings scheduled by users What should you include in the solution？（）

A. Managed Folder Assistant
B. public folders
C. resource mailboxes
D. room list distribution grou