You have an Exchange Server 2010 organization named contoso.com.You need to add a disclaimer to all e-mail messages sent by members of a mail-enabled group named Group1. What should you do？（）

• A、From the Exchange Control Panel （ECP）， configure a MailTip.
• B、From the Exchange Management Console （EMC）， create a transport rule.
• C、From the Exchange Management Shell， run the Set-TransportConfig cmdlet.
• D、From the Exchange Management Shell， run the New-SystemMessage cmdlet.