You have an Exchange Server 2007 environment. You need to prevent your users from sending e- mail messages that contain sensitive financial information to recipients outside your company. What should you do?

A.
Create a journal rule that applies only to all internal users

B.
Create a journal rule that applies only to all external users

C.
Create a journal rule that applies to internal and external users

D.
Create a transport rule that applies to all messages from external users

E.
Create a transport rule that applies to all messages to external users