You work as the Exchange administrator at Company.com.The Company.com network contains an Exchange Server 2010 Organization.Company.com has its headquarters in Stockholm where you are located.The organization contains two exchange server 2010 mailbox servers， the mailbox servers are named -ex01 and - ex02.-ex01 is configured to host a public folder named kingdata.to ensure productivity within the organization you need to ensure that kingdata remains online and available if -ex01 becomes offline.What should you do？（）

A. you should consider adding -ex01 and -ex02 to a database availability group （dag）
B. you should consider changing the folder limitations from the properties of KINGDATA
C. you should consider adding -ex02 from the properties of kingdata
D. you should consider adding -ex01 and -ex02 to a client access server array