You are employed as the exchange administrator at Company.com.the Company.com network contains an exchange 2010 organization that contains a single mailbox server named -ex01.Company.com has its headquarters in stockholm where you are located.-ex01 in turn contains two mailbox databases named kingdatabase1 and kingdatabase2.you receive an instruction from the cio to restore a backup of kingdatabase1.to ensure productivity you need to make sure that all examways users can connect to the mailboxes on kingdatabase1 whilst you doing the restore. What should you do？（）

• A、Your first step should be to create a Client Access server array.
• B、Your first step should be to create a database availability group （DAG）.
• C、Your first step should be to create a recovery storage group.
• D、Your first step should be to create a Recovery Mailbox database.