You work as the enterprise exchange administrator at Xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.A new Xxx usage policy prohibits the employees from using certain words in internal e-mail messaging.What actions must you take to have the policy implemented？（）
- AYou must set up an IP Block list.
- BYou must set up sender filtering.
- CYou must set up managed folders.
- DYou must build a transport rule