You work as the Exchange administrator at Company.com.The Company.com network contains an Exchange Server 2010 Organization.You are responsible for managing the Exchange network for Company.com.the Company.com network contains two mailbox servers named - ex01 and -ex02 as well as a mailbox database named -ex03.-ex01 and -ex02 are members of a database availability group named tkdag and contain a copy of -ex03.during the course of the week you receive an instruction from the cio to remove -ex03 from -ex01.What should you do？（）

• A、Your best option would be to right-click the database copy from the Exchange Management Console （EMC）.Thereafter you should select Remove.
• B、your best option would be to run clean-mailboxdatabase -identity -ex03 from the exchange management shell.
• C、Your best option would be to right-click TKDAG from the Exchange Management Console （EMC）.Then the Manage Database Availability Group Membership should be selected thereafter -ex01 should be removed from the list and manage clicked.
• D、your best option would be to run remove-mailboxdatabase -identity -ex03/-ex01 from the exchange management shell.