You have an Exchange Server 2010 organization.You need to prevent internal users from sending messages that contains the phrase °Company Confidentia¡± to external use.What should you create？（）

A.Create a retention tag.Assign the retention tag to a retention policy.Apply the retention policy to all users
B.Create a retention tag.Assign the retention tag to a retention policy.Create a journal rule
C.Create managed custom folder.Run the New Managed Content Settings wizard.Create a journal rule
D.Run the New Managed Content Settings wizard.Create a new managed folder mailbox policy.Apply the policy to all users

A.a new managed custom folder
B.a new message classification
C.a new retention policy
D.new managed content settings

A.a linked mailbox
B.a managed custom folder
C.a message classification
D.an Outlook Protection Rule