You have an Exchange server 2010 organization.Users use Microsoft Outlook 2010 and Outlook Web Application （OWA） to connect to the servers.You create a mail-enabled distribution group named EXECS that contains all the company executives. You need to ensure that all users are notified before an e-mail is forwarded to the EXECS distribution group.What should you do？（）
- ACreate a custom MailTip for the EXECS distribution group.
- BConfigure the message delivery restrictions for the EXECS distribution group.
- CCreate an Outlook Protection Rule for each member of the EXECS distribution group.
- DCreate a transport rule that adds a disclaimer to all messages sent to the EXECS distribution group.