You have an Exchange Server 2010 organization that contains three Mailbox servers.All Mailbox servers are members of a database availability group （DAG） and have a public folder database.The Active Directory forest contains one site.You create a new site and install new Exchange Server 2010 servers in the site.You need to ensure that public folders are stored on servers in both sites.What should you do？（）

A.Create a public folder database on a server in the new site. Modify the replication settings for all public folders

B.Create a public folder database on a server in the new site.Run the Set-DatabaseAvailabilityGroup cmdlet from a server in the new site

C.Configure clustered continuous replication （CCR） on two servers in the new site. Modify the replication settings for all public folder databases

D.Configure standby continuous replication （SCR） on a server in the new site. Run the Enable-StorageGroupCopy cmdlet from a server in the new site