问题：

[单选]

You work as a network Exchange administrator at Company.com.The Company.com network 
currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com organization makes use of Microsoft Exchange Server 2010 as their messaging solution.Company.com has recently added a distribution group named KingDistribute.During the course of the business week you receive instruction from Company.com to ensure that a user named Dean Austin is able to add and remove members from KingDistribute whilst ensuring you prevent Dean Austin from modifying all other groups.
What should you do？（）

A . You should consider having Dean Austin assigned the Distributions Groups management role.
B . You should consider having Dean Austin assigned the MyDistributionsGroups management role.
C . You should consider having Dean Austin added ti KingDistribute’s Managed by list.
D . You should consider having Dean Austin assigned as a group moderator for KingDistribute.