Your network consists of a single Active Directory forest that contains a root domain and two child domains. All servers run Windows Server 2008 R2. A corporate policy has the following requirements： èAll local guest accounts must be renamed and disabled. èAll local administrator accounts must be renamed. You need to recommend a solution that meets the requirements of the corporate policy. What should you recommend？（）
- AImplement a Group Policy object（GPO） for each domain.
- BImplement a Group Policy object（GPO） for the root domain.
- CDeploy Network Policy and Access Services（NPAS）on all domain controllers in each domain.
- DDeploy Active Directory Rights Management Services（AD RMS）on the root domain controllers.