You need to ensure that a user is able to modify group membership of a distribution group

You have an Exchange Server 2007 environment. You need to ensure that a user is able to modify group membership of a distribution group. What should you do?

A.
Run the Set-Acl cmdlet

B.
Run the Add-ADPermission cmdlet

C.
Run the Set-DistributionGroup cmdlet

D.
Use the Exchange Management Console