You work as the exchange administrator at TestKing.com. The TestKing.com network contains an Exchange Server 2010 Organization. TestKing.com has its headquarters in Stockholm where you are located.The TestKing.com network contains a database availability group （DAG）. You receive an instruction fromthe management to devise a Mailbox database security solution for the organization. Management wantsthe read/write performance to be maximized as well as ensuring that any access to the database isprohibited in the event of theft. What should you do？（）
- AYou should recommend that management make use of DAG network encryption.
- BYou should recommend that management make use of Encrypted File System （EFS）
- CYou should recommend that management make use of Windows BitLocker Drive Encryption.
- DYou should recommend that management make use of Rights Management Service RMS.