You are employed as an administrator at ABC.com. ABC.com has a single domain, named
ABC.com. ABC.com makes use of Microsoft Exchange Online in their environment.
You have been instructed to make sure that every e-mail message sent to an outside contact by a
ABC.com user includes a subject prefix. You have accessed the Exchange Admin Center (EAC).
Which of the following is the option you should select from the feature pane?

A.
You should consider selecting Unified messaging.

B.
You should consider selecting Public folders.

C.
You should consider selecting Recipients.

D.
You should consider selecting Mail flow.

Explanation: