You are an administrator in a company that has a Main Office and 5 branch offices.In every branch office exist a Hub Transport server， and only in Main Office exists an Edge server.You add a disclaimer to all internal and external e-mail messages sent by users in the company. You discover that e-mail messages sent from one of Branch Offices do not include the disclaimer.You need to ensure that all e-mail messages include disclaimer.What should you do？（）

• A、Restart Microsoft Exchange System Attendant
• B、Modify cache settings of Branch Offices Hub Transport Server
• C、Force Active Directory replication on the Branch Office Domain Controller
• D、Export all transport rules from the Hub Transport Server in Main Office import the transport rules in the branch office Hub Transport Server