You have an Exchange Server 2010 SP1 organization.

The organization contains two mailbox-enable users named user1 and user2.

You need to ensure that user1 can send email messages as user2.

Which cmdlet should you use?

A.
Add-ADPermission

B.
Set-Group

C.
Set-MailboxFolderPermissions

D.
Set-Mailbox

E.
New-ManagementRoleAssignment

F.
New-ManagementScope

G.
New-TransportRule

H.
New-MailContact

I.
Set-MailUser

J.
Set-ManagementRoleAssignment

Explanation:
Add-ADPermission e.g. Add-ADPermission user2 -User "DomainUser1" -Extendedrights "Send As"