You have an Exchange organization. All servers in the organization have Exchange Server
2010 Service Pack 1 (SP1) installed.
You create a retention policy and apply the policy to all mailboxes in the organization.
You need to prevent the retention policy from being applied to a user named User1.
What should you do?

A.
Run the set-mailbox -identity user1 -singleitemrecoveryenabled $true command.

B.
Modify the management role groups.

C.
Create a Retention Policy Tag that uses the All other folders tag type.

D.
Create a Retention Policy Tag that uses the Personal Folders tag type.

E.
Run the set-retentionpolicytag -identity never delete -type all command.

F.
Run the set-retentionpolicytag -identity never delete -type Personal command.

G.
Run the get-retentionpolicytag | set-retentionpolicytag -retentionenabled $false command.

H.
Run the set-mailbox -identity ‘user1’ -retentionholdenabled $true command

I.
Modify the User Role Assignment Policy.

Explanation:
http://technet.microsoft.com/en-us/library/bb123981.aspx
http://technet.microsoft.com/en-us/library/dd335168.aspx