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.