Your company includes a single Exchange Server 2003 server.
You create a global security group named Group1. Users report that they are unable to view and select Group1 from the global address list (GAL).
You need to ensure that all users can view and select Group1 from the GAL.
What should you do?

A.
Mail-enable Group1.

B.
Modify the e-mail field for Group1.

C.
Convert Group1 to a universal security group.

D.
Convert Group1 to a universal distribution group.